Essential strategies and practice techniques for this IELTS Reading question type. Learn how to manage time and improve accuracy.
Originally published April 2023. Last reviewed 3 July 2026.
Private Space
A It’s a remarkable achievement: the question is no longer ‘How can we send humans into space?’ but ‘How can we keep them there?’. Spaceflight is reaching a turning point where new technologies in engine development, better understanding of aerodynamics and materials for body construction are making spaceflight possible for private industry.
B The history of space exploration, until relatively recently, has been one of big government-backed projects like the Space Shuttle, Mars Landers and Long March rockets. But the most recent launches to the International Space Station (ISS) have been very special for at least three reasons. Firstly, along with 450 kg of scientific equipment, food and clothes, the rocket was carrying ice cream for the three space station astronauts. Secondly, the rocket was unmanned, being guided into docking position and back to earth again by remote control and automated systems. Finally, the rocket was commissioned from a private company by NASA.
C When the privately owned rocket delivered its goods to the ISS, it marked a milestone in the evolution of space flight and vindicated NASA’s decision to delegate routine supply flights to the space station. The flight has been a long time in development. It started with President George W Bush announcing his Vision for Space Exploration, calling for the ISS to be completed. Under the next President, America’s Space Shuttles were retired, leaving NASA with no other choice but to look for alternative methods of supplying the ISS. The initiative was part of an effort to commercialise the space industry in order to decrease costs and spread the investment in the industry across a wider group than governments.
D The initiative had many attractions for NASA. By outsourcing to the private sector the routine business of taking food and equipment to and from low-earth orbit, NASA can theoretically free up money to do things that it really wants to prioritise: missions such as sending astronauts to Mars and landing on asteroids by the 2030s. Now that the Space Exploration Technologies Corporation (spaceX) has proved that private enterprise can be players in space exploration, firms are pouring money into developing new spacecraft built to transport cargo, to mine asteroids and to carry passengers into space.
E In the last half of the twentieth century only government-backed agencies like NASA and Russia’s ROSCOSMOS were capable of running space programmes due to the gigantic investment costs and uncertain payoffs. However, SpaceX and similar companies are proving that the former conditions are no longer relevant as new solutions are coming to light. Commercial companies like Boeing are able to raise large sums of money to run these projects.
Furthermore, as the firms are running cargo and taxi services to lower orbits, the break-even point is lower, the technology is cheaper and they have the benefit of years of experience in commercial aviation and space flight. Opening space programmes to the commercial sector has the additional advantage of generating more solutions to old problems. An analogy is the invention of the Internet. When the technology went into the commercial sector, no one could have envisioned the development of social network sites. Likewise, no one can predict where commercial enterprise will take the space industry.
F The uncertainty surrounding where the space industry will end up is a problem as well as an asset and it is unsettling private investors who like to invest in relatively certain prospects. At the moment the industry is dominated by big-spending billionaires like the owner of SpaceX. In addition, the relatively small number of companies in the area could pose a problem in the future. The commercial space industry is still very new and there is no guarantee that progress will be smoother. For one thing, no one is sure that the business model is sound: government is still the major, if not only, customer available to the private space companies.
The other problem is that space travel is high risk: the loss of space shuttles Challenger in 1986 and Columbia in 2003 illustrates that even the most carefully planned launches have unavoidable risks associated with them. The question is what would happen to the industry if another accident occurred. Finally, many space experts are doubtful that, even if private industry takes over the ‘taxi’ role for low-orbit missions, NASA will be able to achieve its ambitions, given its squeezed budgets and history of being used for political purposes. Furthermore, NASA may have created another space race, this time between government and private industry. If NASA doesn’t go to Mars or the asteroid belt, its private competitors certainly have plans to do so.
G In spite of all of these risks, many argue that it is critical for the private sector and federal government to work together to push further into space.
Questions 1-6
The passage has six paragraphs labelled A-F.
Which paragraph contains the following information?
Write the correct letter A-F in boxes 1-6 on your answer sheet.
1 NASA being able to spend money on important projects ……….
2 events leading to the commercialisation of spaceflight ……….
3 new developments that have made spaceflight more accessible ……….
4 an automated rocket that successfully completed a mission ……….
5 the great dangers of space travel ……….
6 new answers being found to previous questions ……….
Questions 7-11
Choose the correct letter, A, B, C or D.
7 Which is NOT mentioned as making private space flight possible?
A new methods of constructing the rockets
B modern substances from which to build the rockets
C understanding better how air moves round objects
D new methods of making space suits
8 Why are the recent launches special?
A Their destination was the International Space Station.
B They carried clothes.
C They were not managed by a private company.
D The rocket is not owned by a government.
9 In order to make NASA look for other spaceflight providers, the US government
A invested in private space companies.
B started to build the international space station.
C stopped using the Space Shuttle.
D allowed private companies to fly into space.
10 Private companies
A need to reduce the cost of space projects.
B have social network sites.
C are able to fly rockets at high orbits.
D act as ferries to and from the space station.
11 At present, the private space industry is characterised by
A uncertainty about how to make profits.
B companies controlled by individuals.
C companies too small to raise the amount of money needed.
D government interference.
Questions 12-17
Complete the summary below.
Choose NO MORE THAN TWO WORDS from the passage for each answer.
Write your answers in boxes 12-17 on your answer sheet.
There are a number of problems with commercial space projects. To start with, the 12……… might not be sound. There is also great 13……….. attached to space flight – what would happen if there was another 14……..? Experts doubt whether NASA can fulfil its 15……….. as it has often been under 16…………. pressure. Moreover, the development may lead to a 17………… between NASA and the private space industry.
Essential strategies and practice techniques for this IELTS Reading question type. Learn how to manage time and improve accuracy.
Originally published April 2023. Last reviewed 3 July 2026.
A Neurologists tend to divide the experience of love into three distinct categories: attraction, lust, and attachment. The combination of all three can make for an intoxicating and lasting bond, but they have not always experienced together. Frequently, for example, we lust after those with whom we have no desire of having a long-term relationship; at other times, we feel ‘attached’ to people in the sense of being drawn to them emotionally or spiritually, but not drawn to them physically.
It is accurate to describe these as ‘stages’ of love — lust tends to come first, then attraction, which lasts for months or years, and finally attachment, which can keep people together for decades. These are separate chemical substrates, so they can overlap; however, evidence suggests that attraction has a limited lifespan.
B Lust is typically experienced soon after puberty. This is when estrogen and testosterone — the underlying chemical substrates for lust in women and men respectively — activate themselves in our bodies for the first time. The primary purpose of lust is believed to be procreation, and the experience is one of feeling physically drawn, or even ‘pulled’ towards another person. Pheromones, physical attractiveness, and our socialized predispositions for what we seek in a mate are the factors that activate the sensation of lust. Despite the strength, it can have over our psyche, lust on its own is a very fleeting experience. It can firmly steer people together for their initial encounters, but it has no power to keep them there.
C If the relationship is to last, something called attraction must take place. The attraction is the intoxicating sensation experienced in the initial period of knowing someone. The ‘symptoms’ include dizziness, flushed skin, and a loss of appetite and sleep. These are a result of a chemical cocktail of dopamine and norepinephrine that PEA — a transmitter chemical — unleashes into the bloodstream when attraction takes place.
Dopamine is responsible for the blissful feelings of self- confidence, joy, and motivation that new love brings about; norepinephrine, similar to adrenaline, brings about palpitations and anxiety. The attraction has more staying power than lust; while its intensity fades after a few weeks, the effect of the PEA transmission can continue for some time between eighteen months and four years. After that, our bodies build up a natural tolerance.
D At this stage, a transition to a phase called attachment can occur. The ‘rush’ of attraction is replaced by endorphins like oxytocin and vasopressin that feel like a gentle, warm sort of pleasantness — a safe feeling that calms the mind, numbs pain, and soothes anxiety. This is a much more pleasant feeling in which to spend an extended period of time — potentially, forty, fifty or more years, depending on when you meet your partner.
It allows you to live your life with someone, without their being the central obsession of your life. Unfortunately, there is no guarantee that PEA transmission will evolve into the endorphin stage — in many instances, it will be replaced by a feeling of emptiness and dissatisfaction. It is not a coincidence that peak divorce rates occur at between four and seven years, as PEA transmission wears away and attachment does not materialize in many people’s brains.
E Even neurologists agree that chemistry isn’t everything. There are numerous other factors such as culture and personality, for which science may never have an explanation. While dopamine is bliss, however, ignorance is not — neurology has much to contribute to satisfaction in our personal lives. It may not be a good idea to commit to marriage or spending the rest of your life with someone if you still feel the blissful rush of PEA transmission, for example.
Once your brain has succumbed to the warming opiates of oxytocin and vasopressin, this will be a safer commitment. Attachment brings other needs to the foreground, however; while people enjoy the security that attachment brings about, they do not lose their desires for either lust or attraction. Losing the ability to give your partner the rush of PEA transmission, while knowing that he may feel this for other people, can bring about jealousy and anxiety in people. Acknowledging and discussing these insecurities can alleviate them as it is likely that, to some extent, both partners will be feeling them.
Questions 27-33
Choose NO MORE THAN TWO WORDS AND/OR A NUMBER from the passage for each answer.
Lust
Attraction
Attachment
Designed to encourage 27 ……………..
Two chemicals are released through a third one called PEA.
Chemicals in the brain work to reduce physical and mental suffering, and calm 31 …………
Generated by natural scent, look and 28 ……………..
29………….. is a feel-good chemical, norepinephrine, brings about elevated heart rate and nervousness.
Separate chemical processes mean PEA transmission does not always progress to 32 …………….. There is a relationship between 33 ……………… and the failure of attachment to occur.
Has weak staying power
Can last for up to 30 ……………..
—
Questions 34-39
Do the following statements agree with the views of the writer in the Reading Passage ?
YES if the statement agrees with the views of the writer
NO if the statement contradicts the views of the writer
NOT GIVEN if it is impossible to say what the writer thinks about this
34 We cannot explain all romantic decisions based on chemical processes.
35 Knowing about brain chemistry can actually harm our happiness.
36 Long-term relationship commitments should be made after attraction has faded.
37 Relationship insecurities fade away once the attachment phase begins.
38 Growing resistance to PEA transmission is experienced as mental anguish.
39 Talking about the effects of PEA resistance on a relationship can make anxiety worse.
Question 40
Choose the correct letter, A, B, C, or D.
40 Which is the most suitable title for the Reading Passage?
Essential strategies and practice techniques for this IELTS Reading question type. Learn how to manage time and improve accuracy.
Originally published April 2023. Last reviewed 3 July 2026.
A Radioactivity occurs naturally. The main source comes from natural sources in space, rocks, soil, water and even the human body itself. This is called background radiation and levels vary from place to place, though the average dose is fairly constant. The radiation which is of most concern is artificial radiation which results from human activities. Sources of this include the medical use of radioactive materials, fallout, and contamination from nuclear bomb tests. discharges from the nuclear industry, and the storage and dumping of radioactive waste.
B While artificial radiation accounts for a small proportion of the total, its effects can be disproportionate. Some of the radioactive materials discharged by human activity are not found in nature, such as plutonium, while others which are found naturally may be discharged in different physical and chemical forms, allowing them to spread more readily into the environment, or perhaps accumulate in the food-chain.
For all these reasons simple comparisons of background and artificial radioactivity may not reflect the relative hazards. Equally important, it has never been shown that there is such a thing as a safe dose of radiation and so the fact that we are progressively raising global levels should be of as much concern to us as the possibility of another major nuclear disaster like Chernobyl. Every nuclear test, nuclear reactor or shipment of plutonium means an additional and unnecessary health risk.
C In general, the effects of radiation can be divided into those which affect the individuals exposed and those which affect their descendants. Somatic effects are those which appear in the irradiated or exposed individual. These include cancer and leukemia. Hereditary or genetic effects are those which arise in subsequent generations.
Many of the elements which our bodies need are produced by the nuclear industry as radioactive isotopes or variants. Some of these are released into the environment, for example, iodine and carbon, two common elements used by our bodies. Our bodies do not know the difference between an element that is radioactive and one which is not. So, radioactive elements can be absorbed into living tissues, bones or the blood, where they continue to give off radiation. Radioactive strontium behaves like the calcium-an essential ingredient in our bones — in our bodies. Strontium deposits in the bones send radioactivity into the bone marrow, where the blood cells are formed, causing leukemia.
D There are three principal effects which radiation can have on cells: firstly the cell may be killed; secondly the way the cell multiply may be affected, resulting in cancer; and thirdly damage may occur in the cells of the ovaries or testes, leading to the development of a child with an inherited abnormality.
In most cases, cell death only becomes significant when large numbers of cells are killed, and the effects of cell death therefore only become apparent at comparatively high dose levels. If a damaged cell is able to survive a radiation dose, the situation is different. In many cases, the effect of cell damage may never become apparent. A few malfunctioning cells will not significantly affect an organ where the large majority are still behaving normally.
However, if the affected cell is a germ cell within the ovaries or testes, the situation is different. Ionizing radiation can damage DNA, the molecule which acts as the cell’s ‘instruction book’. If that germ cell later forms a child, all of the child’s cells will carry the same defect. The localized chemical alteration of DNA in a single cell may be expressed as an inherited abnormality in one or many future generations.
In the same way that a somatic cell in body tissue is changed in such a way that it or its descendants escape the control processes which normally control cell replication, the group of cells formed may continue to have a selective advantage in growth over surrounding tissue. It may ultimately increase sufficiently in size to form detectable cancer and in some cases cause death by spreading locally or to other parts of the body.
E While there is now broad agreement about the effects of high-level radiation, there is controversy over the long-term effect of low-level doses. This is complicated by the length of time it takes for effects to show up, the fact that the populations being studied (bomb survivors, people exposed to nuclear tests or workers in the nuclear industry ) are small and exact doses are hard to calculate.
All that can be said is that predictions made about the effects of a given dose vary. A growing number of scientists point to evidence that there is a disproportionately high risk from low doses of radiation. Others assume a directly proportionate link between the received dose and the risk of cancer for all levels of dose, while there are some who claim that at low doses there is a disproportionately low level of risk.
Questions 1-4
Reading Passage has 5 sections A-E.
From the list of headings below choose the most suitable heading for sections B to E.
Write the appropriate numbers (i-viii) in boxes 1-4 on your answer sheet.
Note: There are more headings than sections, so you will not use all of them. You may use any of the headings more than once.
HEADINGS
i. Cells affected by radiation
ii. Effects of low-dose radiation
iii. Effects on cell multiplication
iv. Effects of radiation on cells
v. Sources of radiation
vi. Radiation in the food chain
vii. Dissemination of radiation
viii. Health effects of radiation
Example Section A Answer v
1 Section B
2 Section C
3 Section D
4 Section E
Questions 5-10
Classify the following as linked in the passage to:
BR Background Radiation
AR Artificial Radiation
N Neither
B Both
Write the appropriate letters in boxes 5-10 on your answer sheet.
5 produced by the human body
6 involves only safe amounts of radiation
7 is used for medical purposes
8 includes plutonium
9 produces a constant level of radiation
10 can enter the food chain
Questions 11-16
Complete the summary of Section D of Reading Passage below.
Choose your answers from the box below the summary and write them in boxes 11—16 on your answer sheet.
Note: There are more words/phrases that you will need to fill the gaps. You may use a word or phrase more than once if you wish.
SUMMARY
Radiation can affect an organism by damaging 11……… which may then die or malfunction. If the 12……. affected in this way is small, the effect will not be too drastic and may not be noticeable. Alternatively, the 13……. may grow uncontrollably and form cancers, in which case the organism is likely to die.
If the DNA in a germ cell in the ovaries or testes is affected, and 14…….. originating from that 15….. may display 16…., which can, in turn, be passed on to further offspring.
Comprehensive guide covering essential IELTS preparation strategies and techniques to help you achieve your target band score.
Originally published March 2023. Last reviewed 3 July 2026.
The zero conditional is used to express general truths, scientific facts, or situations where one action consistently leads to another. The structure of a zero conditional sentence involves two simple present verbs: one in the ‘if’ clause (condition) and one in the main clause (result).
If clause (condition)
Main clause (result)
If + simple present
simple present
If this thing happens
that thing happens.
The order of the clauses can be reversed, and the meaning remains the same. In zero conditional sentences, “if” can be replaced with “when” since both convey general truths.
Examples
If you drop a glass, it breaks.
Glass breaks if you drop it.
When you drop a glass, it breaks.
Glass breaks when you drop it.
Functions
The zero conditional has several functions:
Expressing general truths and scientific facts: These statements hold true regardless of specific circumstances.
Examples:
If you heat water to 100°C (212°F), it boils. If plants don’t receive enough sunlight, they can’t photosynthesize. If you combine hydrogen and oxygen, you get water.
Describing consistent outcomes: These sentences express consistent results that occur when
a certain condition is met.
Examples:
If it rains, the ground gets wet. If you oversleep, you might be late for work.
Giving instructions: The zero conditional is often used to provide directions or advice by using the imperative in the main clause.Examples:
If Jane calls, tell her to meet me at the library. Ask Maria if you’re not sure how to complete the task. If you need help, don’t hesitate to reach out. Keep your phone on silent if we’re in a meeting.
Practice Questions
Choose the correct option in each of the following zero conditional sentences.
If you (leave / leaves) food outside, it attracts ants.
Answer: leave Explanation: The correct form is “leave” as we use simple present verbs in both clauses of zero conditional sentences.
Plants (grow / grows) if they receive sufficient sunlight and water.
Answer: grow Explanation: The correct form is “grow” as we use simple present verbs in both clauses of zero conditional sentences.
If you (don’t water / doesn’t water) the plants regularly, they wilt.
Answer: don’t water Explanation: The correct form is “don’t water” as we use simple present verbs in both clauses of zero conditional sentences.
A bicycle (rust / rusts) if it’s left out in the rain.
Answer: rusts Explanation: The correct form is “rusts” as we use simple present verbs in both clauses of zero conditional sentences.
When the wind (blow / blows) strongly, the tree branches sway.
Answer: blows Explanation: The correct form is “blows” as we use simple present verbs in both clauses of zero conditional sentences.
If you (mix / mixes) vinegar and baking soda, it creates a chemical reaction.
Answer: mix Explanation: The correct form is “mix” as we use simple present verbs in both clauses of zero conditional sentences.
The traffic lights (turn / turns) red if there’s an emergency vehicle approaching.
Answer: turn Explanation: The correct form is “turn” as we use simple present verbs in both clauses of zero conditional sentences.
If you (touch / touches) a hot stove, you get burned.
Answer: touch Explanation: The correct form is “touch” as we use simple present verbs in both clauses of zero conditional sentences.
When the air temperature (drop / drops) below 0°C (32°F), water freezes.
Answer: drops Explanation: The correct form is “drops” as we use simple present verbs in both clauses of zero conditional sentences.
If a device (is / are) not charged, it doesn’t work properly.
Answer: is Explanation: The correct form is “is” as we use simple present verbs in both clauses of zero conditional sentences.
Comprehensive guide covering essential IELTS preparation strategies and techniques to help you achieve your target band score.
Originally published March 2023. Last reviewed 3 July 2026.
In this guide, we will explore the past simple tense, its uses, and the necessary information to help you understand and master it. We’ll cover completed actions in the past, past habits, situations that were true in the past, and events in chronological order. After that, we’ll provide 25 practice questions to test your understanding of the past simple tense, with correct answers and explanations at the end.
Completed actions in the past
The past simple tense is used to describe actions or events that happened in the past, with a specific time either mentioned or implied. These actions are completed, and there is no connection to the present.
Examples:
I met Sarah last week. (The meeting happened in the past and is finished.)
They finished the project on time. (The project was completed in the past.)
He visited London last summer. (The visit took place in the past and is over.)
Past habits
The past simple tense is used to talk about past habits or actions that occurred regularly or repeatedly in the past. These habits are no longer true in the present.
Examples:
He exercised every morning before work. (He no longer exercises every morning.)
She taught English at a local school. (She doesn’t teach English there anymore.)
We used to go for a walk every evening. (We don’t go for walks every evening now.)
Situations that were true in the past
The past simple tense is used to describe situations, facts, or states that were true in the past but are no longer true in the present.
Examples:
My great-grandmother spoke four languages. (She is no longer alive.)
She grew up in a small village. (She doesn’t live in that village now.)
Events in chronological order
The past simple tense is used to describe the main events of a story in chronological order, showing a sequence of actions that occurred in the past.
Example:
After I got home, I changed my clothes, and then I started cooking dinner. (The actions happened one after the other in the past.)
Forming the past simple tense
The past simple tense is formed by adding -ed to the base form of regular verbs. For example, “work” becomes “worked” and “dance” becomes “danced.” However, there are many irregular verbs in English that have unique past simple forms, such as “go” (went), “eat” (ate), and “sing” (sang).
Practice Questions:
Last week, they ______ (move) to a new house. a. moved b. were moving c. will move
She ______ (study) French when she was in high school. a. studied b. was studying c. will study
Yesterday, it ______ (rain) heavily in the morning. a. rained b. was raining c. will rain
We ______ (have) dinner together every Sunday in the past. a. had b. were having c. will have
He ______ (write) a letter to his friend two days ago. a. wrote b. was writing c. will write
Correct Answers and Explanations:
Correct answer: a. moved Explanation: The past simple tense is used to describe completed actions in the past. In this case, moving to a new house is a completed action that happened last week.
Correct answer: a. studied Explanation: The past simple tense is used to talk about past habits. Studying French in high school is a past habit that is no longer true in the present.
Correct answer: a. rained Explanation: The past simple tense is used to describe completed actions in the past. The heavy rain in the morning is a completed action that happened yesterday.
Correct answer: a. had Explanation: The past simple tense is used to talk about past habits. Having dinner together every Sunday is a past habit that is no longer true in the present.
Correct answer: a. wrote Explanation: The past simple tense is used to describe completed actions in the past. Writing a letter to a friend is a completed action that happened two days ago.
