试题详情
阅读理解-阅读单选 适中0.65 引用4 组卷284

How do astronauts do the laundry in space ? They don’t. They wear their underwear, gym clothes and everything else until they can’t take the smell anymore, then junk them.

NASA wants to change that — if not at the International Space Station (ISS), and then the moon and Mars- and stop throwing away tons of dirty clothes every year, putting them in the waste to burn up in the atmosphere aboard abandoned cargo ships. So it’s teamed up with Procter&Gamble Co. (P&C) to figure out how best to clean astronauts’ clothes in space so they can be reused for months or even years, just like on Earth.

Rocket cargo space is tight and expensive, according to NASA, so why waste it on new clothes if their clothes could be kept looking and smelling fresh? There’re also the health factors. Space station astronauts exercise two hours every day to deal with the muscle-and bone-withering effects of weightlessness, quickly leaving their workout clothes sweaty, smelly and stiff. Their T-shirts, shorts and socks end up so terrible that they run through a pair every week, according to Leland Melvin, a former NASA astronaut. “After that, they’re considered poisonous,” said Melvin, who’s serving as a spokesman for the project.

While NASA and the other space station partners have looked into special clothes to extend wear, it’s not a long-term solution. In its initial experiment, P&G will send up detergent specially made for space in December, so scientists can see how the detergent react to six months of weightlessness.

P&G is developing a washer-dryer combination that could operate on the moon or even Mars, using a little water and detergent. Then next May, stain-removal pens and wipes will be delivered for testing by astronauts. “The best solutions come from the most diverse teams,” Melvin said, “and how more diverse can you be than Tideand NASA?”

【小题1】How do astronauts deal with the clothes after wearing them?
A.By throwing them directly into space.B.By burning them up in a spaceship.
C.By reusing them in cargo ships.D.By cleaning them up by hand.
【小题2】What does paragraph 3 mainly talk about?
A.The limitations of rocket cargo space.B.The reasons for cleaning dirty clothes in space.
C.The suitable exercising ways of astronauts.D.The role Melvin plays in designing the project.
【小题3】What can we learn about the special clothes for astronauts?
A.It’s time-consuming to make them.B.They are easy to wash.
C.They are not very satisfactory.D.They won’t become smelly.
【小题4】What will the company P&G do for astronauts next year?
A.Send them some daily cleaning supplies.
B.Reduce the effect of weightlessness on them.
C.Design a machine for drying clothes in space.
D.Deliver pens for them to improve their handwriting.
2022·湖南长沙·模拟预测
知识点:说明文航空航天 答案解析 【答案】很抱歉,登录后才可免费查看答案和解析!
类题推荐

How many things can you see in the night sky? A lot! On a clear night you can see the moon, some planets, and thousands of sparking stars.

       You can see even more with a telescope. You might see that many stars look larger than others. You might see that some stars that look white are really red or blue. With bigger and bigger telescopes you can see more and more objects in the sky. And you can see those objects in more and more detail.
       But scientists believe there are some things in the sky that we will never see. We won’t see them with the biggest telescope in the world, on the clearest night of the year. That’s because they’re invisible. They’re the mysterious dead stars called black holes.
       You might find it hard to imagine that stars die. After all, our sun is a star. Year after year we see it up in the sky, burning brightly and giving us heat and light. The Sun certainly doesn’t seem to be getting old or weak. But stars do burn out and die after billions of years.
       As a star’s gases burn, they give off light and heat. But when the gases run out, the star stops burning and begins to die.
       As the star cools, the outer layers of the star pull in toward the center.The star squashes into a smaller and smaller ball.If the star was very small, the star ends up as a cold, dark ball called a black dwarf.If the star was very big, it keeps squashing inward until it’s packed together tighter than anything in the universe.
       Imagine if the Earth were crushed until it was the size of a tiny marble.That’s how tightly this dead star, a black hole, is packed.What pulls the star in toward its center with such power? It’s the same force that pulls you down when you jump-the force called gravity.A black hole is so tightly packed that its gravity sucks in everything — even light.The light from a black hole can never come back to your eyes.That’s why you see nothing but blackness. 
       So next time you stare up at the night sky, remember: there’s more in the sky than we can see! Scattered in the silent darkness are black holes-the great mystery of space.
【小题1】According to the article, how will a star begin to die?
A.As it gets hotter and hotter, it explodes.
B.It collides with other stars.
C.It can only live for about a million years.
D.As its gases run out, it cools down.
【小题2】Which of the following is NOT a feature of a black dwarf?
A.It is packed most tightly.B.It is dark.
C.It is smaller in size than a common star.D.It is cold.
【小题3】Why can’t you see light when you look at a black hole?
A.Because most black holes are so far away.
B.As the star’s gases burn, it stops giving off heat and light.
C.As a star cools, its outer layers pull in towards its center.
D.The gravity of a black hole is so strong that it sucks the light inward.

History can be found at every turn, and every corner, as you walk the streets of this architectural marvel of a city, and at Powis Place and Fraser Studios you are just a short 15-minute walk away from one of the oldest universities in the country. Links can be found to The University of Aberdeen as far back as 1495, with a beautiful medieval (中世纪的) campus to back up its claims.

It makes it the fifth oldest university in the whole of the UK, and as a result it has always been a well-regarded higher education establishment. It has been voted the Scottish University of 2019 and is ranked in the Top 30 Universities in the UK in 2019. It attracts people from all over the UK and abroad. With distance learning choices, it is an attractive proposition to many students. The Sir Duncan Rice Library has perfect views of the entire city and beaches, and the university has one of the largest medical campuses in the whole of Europe.

Aberdeen University Students' Association (AUSA) is home to over 150 societies and hundreds of activities relating to those societies. It ensures that whatever you are interested in you are well served when moving to the city as a student. It is a fantastic way to meet and make new friends with people from all over the world. Within the Union there is a cafe and a shop, with many food outlets providing daily refreshments (茶点) during breaks between lectures and study. There are also plenty of volunteering and training opportunities to take part in, whether you are looking for a hobby, to help others, to present your CV, or all of the above.

The University of Aberdeen certainly holds some reputations, home .to five previous Nobel Prize Winners, an internationally-focused university in teaching and research, and even its very own tartan created in 1992 to celebrate the university 's 500th anniversary.

【小题1】When was the University of Aberdeen first built?
A.2019.B.1992.
C.1495.D.500.
【小题2】What does the underlined words “proposition” most probably mean?
A.choiceB.preparation
C.buildingD.history
【小题3】What can we know about Aberdeen University?
A.Five scientists won the Nobel Prize in 2019.
B.It gained the Scottish University of 2019.
C.It has the largest medical campus in the world.
D.It is the 30th biggest university in Europe.
【小题4】What can we do in the Sir Duncan Rice Library?
A.Join AUSA for over 150 societies.B.Get volunteering opportunities.
C.Receive distance learning.D.Enjoy the whole city and beaches.

Everyone wants to live longer. And we’re often told that the key to doing this is making healthier lifestyle choices. Studies have shown that diet can increase lifespan (寿命).

The researchers brought together data from many studies that looked at diet and longer lives. Combining this data, the researchers were then able to discover how lifespan varied with changes in intake of fruit, vegetables, grains, legumes (类), processed meat, sugary drink etc.

Compared with the typical western diet containing high amounts of high-calorie food and low fruit and vegetable intake, the researchers were then able to produce an optimal diet with more legumes, whole grains and nuts, and less red and processed meat.

The researchers found that eating an optimal diet from age 20 would increase lifespan by more than a decade. They also found that changing from a western diet to the optimal diet at age 60 would increase lifespan by eight years. For 80-year-olds, lifespan could increase by almost three and a half years. These results show us that the gains are largest if these changes start early in life.

However, there are also a few things the study didn’t take into account. First, to see these benefits, people needed to make changes to their diet within a ten-year period. This means it’s uncertain if people may still see benefits to their lifespan if they make changes to their diet over a longer period of time. The study also didn't take past ill-health into account. This means that the benefits of diet on lifespan reflect an average and may be different for each person depending on a variety of other factors, such as ongoing health issues and lifestyle like smoking, drinking and exercise.

【小题1】The underlined word “optimal” in paragraph 3 means _____________.
A.limitedB.worthwhileC.perfectD.classic
【小题2】What does paragraph 5 mainly talk about?
A.The effects of the study.B.Limitations of the study.
C.Measures to benefit from diet.D.The major factors in producing the diet.
【小题3】What do we know about the study?
A.The benefits of the optimal diet vary from person to person.
B.The optimal diet can function well in a short period of time.
C.People who change their diet later live longer than those earlier.
D.The optimal diet always works wonders despite unhealthy lifestyle.
【小题4】Where is the text probably from?
A.A guidebook.B.A news report.
C.A health magazine.D.A medical advertisement.

组卷网是一个信息分享及获取的平台,不能确保所有知识产权权属清晰,如您发现相关试题侵犯您的合法权益,请联系组卷网