Going to outer space is a little like going camping. You have to carry with you all the food and equipment you need for your trip, so your food can’t be too heavy or hard to prepare. Plus, there are 题目和参考答案——青夏教育精英家教网—

题目内容

Going to outer space is a little like going camping. You have to carry with you all the food and equipment you need for your trip, so your food can’t be too heavy or hard to prepare. Plus, there are no refrigerators to keep food cold and fresh. Food with all the water dried out is lightweight and doesn’t spoil(变坏). So, many space foods are dried on Earth and stored in special packets.

On Earth, gravity is the force that keeps your feet on the ground and your sandwich on your plate. But there’s no gravity in space. To keep food from floating(漂浮) away, astronauts on the Space Shuttle attach the packets to a special tray(托盘). The tray can be fixed to a wall or to the astronaut’s lap. To prepare their food, astronauts use liquid forms of salt and pepper. The liquid sticks to the food better. Regular salt and pepper would float away, maybe up an astronaut’s nose.

Liquids float right out of cups and glasses, though. So astronauts drink everything from a small bag with a straw(吸管) that can be closed. Astronauts say that most space foods taste pretty good. Some, such as apples and pudding, are the same as the foods you eat on Earth.

Astronauts eat tortillas instead of bread because they make fewer crumbs(碎屑). Floating crumbs could get stuck in equipment or an astronaut’s eye.

Your body uses food in space the same way it does on Earth. Your body must deal with waste in space too. During takeoff and landing, astronauts can’t leave their seats to go to the bathroom. They wear diapers(尿布) under their spacesuits instead. The Space Shuttle has a bathroom the size of a small closet. The toilet has bars that keep astronauts from floating away. A strong flow of air is used instead of water to flush waste down the toilet.

1.Why do astronauts use liquid forms of salt and pepper to prepare food?

A. Liquid doesn’t spoil.

B. Liquid is convenient to use in space.

C.Liquid is lightweight.

D. Astronauts are in great need of water.

2.What do astronauts think of space foods?

A. Most of them taste pleasant.

B. They are mostly fruits.

C.Most of them are rather cold.

D. They contain too little meat.

3.We can infer from the passage that astronauts ___________.

A. drink from cups and glasses

B. always wear diapers in space

C. can move freely during landing

D. must pay attention to crumbs in space

4.What is the passage mainly about?

A. Astronaut’s hard life in space.

B. How astronauts go to the bathroom.

C. The various foods astronauts eat in space.

D. How astronauts eat and deal with waste in space.

练习册系列答案

相关题目

阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。

Singles’ Day falls on November 11th every year in China, 1.__________ is recognized as a day for people who have no girlfriend or boyfriend. Couples and lovers have Valentine’s Day in 2.__________ (celebrate) of their love, but how about the singles? There must be a day they can celebrate even without a partner. That’s 3._________ people created Singles’ Day.

On Singles’ Day many singles choose to say goodbye to their single lives, 4._________ (attend) blind date parties, and some people even decide to get 5.__________ (marry) with strangers. 6.________ this day has recently become more of a time for shopping, because many shops online will give customers great discount 7._________ (promote) their goods.

More and more people are 8.________ (will) to shop online to get what they want, and I am one of them. I just can’t help buying things9._________ I need them or not. 10._________ (honest) speaking, some of the things that I bought have been put aside forever in my closet.

—Hello! Is Mr. John in the office?

—Yes. But I’m sorry. He is busy _____ and can’t speak to you.

A. at once B. at present C. at the end D. at first

Science can't explain the power of pets, but many studies have shown that the company of pets can help lower blood pressure (血压) and raise chances of recovering from a heart attack, reduce loneliness and spread all-round good cheer.

Any owner will tell you how much joy a pet brings. For some, an animal provides more comfort than a husband/wife. A study by Karen Allen of the State University of New York measured stress (紧张) levels and blood pressure in people - half of them pet owners –while they performed 5 minutes of mental arithmetic (算术) or held a hand in ice water. Subjects completed the tasks alone, with a husband/wife, a close friend or with a pet. People with pets did it best. Those tested with their animal friends had smaller change in blood pressure and returned most quickly to baseline heart rates. With pets in the room, people also made fewer math mistakes than when doing in front of other companions. It seems people feel more relaxed around pets, says Allen, who thinks it may be because pets don't judge.

A study reported last fall suggests that having a pet dog not only raises your spirits but may also have an effect on your eating habits. Researchers at Northwestern Memorial Hospital spent a year studying 36 fat people and their equally fat dogs on diet-and-exercise programs; a separate group of 56 people without pets were put on a diet program. On average, people lost about I1 pounds, or 5% of their body weight. Their dogs did even better, losing an average of 12 pounds, more than 15% of their body weight. Dog owners didn't lose any more weight than those without dogs but, say researchers, got more exercise overall-mostly with their dogs - and found it worth doing.

1.What does the text mainly discuss?

A．Pets’ value in medical research.

B．How pets help people calm down.

C．People's opinions of keeping pets.

D．What pets bring to their owners.

2.We learn from the text that a person with heart disease has a better chance of getting

well if ．

A．he has a pet companion

B．he has less stress of work

C．he often does mental arithmetic

D．he is taken care of by his family

3.According to Allen, why did the people do better with pets around when doing stressful tasks?

A．They have lower blood pressure.

B．They become more patient.

C．They are less nervous.

D．They are in higher spirits.

4.The research mentioned in the last paragraph reports that ．

A．people with dogs did more exercise

B．dogs lost the same weight as people did

C．dogs liked exercise much more than people did

D．people without dogs found the program unhelpful

It was a village in India. The people were poor. However, they were not unhappy. After all, their forefathers had lived in the same way for centuries.

Then one day, some visitors from the city arrived. They told the villagers there were some people elsewhere who liked to eat frog’s legs. However, they did not have enough frogs of their own, and so they wanted to buy frogs from other places.

This seemed like money for nothing. There were millions of frogs in the fields around, and they were no use to the villagers. All they had to do was catch them. Agreement was reached, and the children were sent into the fields to catch frogs. Every week a truck arrived to collect the catch and hand over the money. For the first time, the people were able to dream of a better future. But the dream didn’t last long.

The change was hardly noticed at first, but it seemed as if the crops were not doing so well. More worrying was that the children fell ill more often, and, there seemed to be more insects around lately.

The villagers decided that they couldn’t just wait to see the crops failing and the children have to use the money earned to buy pesticides(杀虫剂) and medicines. Soon there was no money left.

Then the people realized what was happening. It was the frog. They hadn’t been useless. They had been doing an important job—eating insects. Now with so many frogs killed, the insects were increasing more rapidly. They were damaging the crops and spreading diseases.

Now, the people are still poor. But in the evenings they sit in the village square and listen to sounds of insects and frogs. These sounds of the night now have a much deeper meaning.

1.From paragraph 1 we learn that the villagers __________.

A. worked very hard for centuries

B. were poor but somewhat content (满足的)

C. dreamed of having a better life

D. lived a different life from their forefathers

2.Why did the villagers agree to sell frogs ?

A. The frogs were easy money.

B. They needed money to buy medicine.

C. They wanted to please the visitors.

D. The frogs made too much noise.

3.What might be the cause of the children’s sickness?

A. The crops didn't do well.

B. There were too many insects.

C.The visitors brought in diseases.

D. The pesticides were overused.

4.What can we infer from the last sentence of the text ?

A. Happiness comes from peaceful life in the country.

B. Health is more important than money.

C. The harmony between man and nature is important

D. good old day will never be forgotten

语法填空,每空最多可填三个词。

David：You look so sad today, Lucy．What’s wrong with you?

Lucy：I quarreled with my husband this morning.

David：How come? You 1. (get) on quite well these years，right ?

Lucy：He has recently got into the bad habit of smoking，believing that smoking is 2. enjoyment．And I’m afraid his health will become worse 3. he doesn’t give it up．

David：I think you can find some ways 4. (help) him kick the bad habit．

Lucy：He always wants to quit， 5. it seems that he has been too addicted to smoking．David，can you help me?

David：Try to get his attention 6. (take)away when he wants to smoke．For example, you can let him eat some biscuits instead when he wants to smoke．You can also try electronic cigarettes 7. are said to contain no harmful chemicals．Remember, don’t expect him to give up smoking all at once．In other 8. ．decrease the number slowly．Let him smoke 9. (little) day by day, and then he might be able to quit smoking forever．

Lucy：Sounds great! I will try it at once．

David: By the way, I know a man who has 10. (success) quit smoking. You can turn to him for advice if necessary．

Cleverness is a gift while kindness is a choice. Gifts are easy – they’re given after all. Choices can be hard.

I got the idea to start Amazon 16 years ago. I came across the fact that the Internet usage was growing at 2,300 percent per year. I’d never seen or heard of anything that grew that fast, and the idea of building an online bookstore with millions of titles was very exciting to me. I had just turned 30 years old, and I’d been married for a year. I told my wife MacKenzie that I wanted to quit my job and go to do this crazy thing that probably wouldn’t work since most start-ups don’t, and I wasn’t sure what to expect. MacKenzie told me I should go for it. As a young boy, I’d been a garage inventor. I’d always wanted to be an inventor, and she wanted me to follow my passion.

I was working at a financial firm in New York City with a bunch of very smart people, and I had a brilliant boss that I much admired. I went to my boss and told him I wanted to start a company selling books on the Internet. He took me on a long walk in Central Park, listened carefully to me, and finally said, “That sounds like a really good idea, but it would be an even better idea for someone who didn’t already have a good job.” That logic made some sense to me, and he convinced me to think about it for 48 hours before making a final decision. Seen in that light, it really was a difficult choice, but finally, I decided I had to give it a shot. I didn’t think I’d regret trying and failing. And I suspected I would always be haunted by a decision not to try at all.

After much consideration, I took the less safe path to follow my passion, and I’m proud of that choice. For all of us, in the end, we are our choices.

1.What inspired the author with the idea of building an online bookstore?

A. His dream of being an inventor.

B. The support of his wife.

C. The greatly increasing usage of the Internet.

D. Millions of exciting titles.

2.Which of the following is closest in meaning to the underlined sentence?

A. The idea of not trying would keep coming to his mind and disturb him.

B. He would be very excited if he tried it out.

C. He would be always having a doubt if he didn’t try.

D. The decision not to try the online bookstore would terrify him.

3.We can know from the passage that _______.

A. the boss thought the idea was suitable for the author

B. the author wanted someone else to try the idea

C. the author might not regret if he failed the idea

D. the author might go back to his boss if he failed

4.Which of the following would be the best title for the passage?

A. Cleverness and Kindness B. The Starting of Amazon

C. Following My Passion D. We Are What We Choose

How hard we have all prayed(祈祷) to grow up quickly, and looked forward to the happy days of being a grown-up and enjoying the many interests that a youth should have.

At last, you have grown up. At least you are no longer a child. They call you “young lady”. You then enjoy the pleasure of being a young lady. You are proud of being a grown-up teenager. People welcome you-this young lady-heartily. You are glad that your prayer has been answered.

But there is always something that troubles you a lot. You say; “Papa and Mama, give me some money please. My pocket money is all gone already.”

“No”, they say, “your age is a dangerous age. If you have too much money to spend, it won’t do you any good.” Then you have to stay at home because you dare not go out with an empty pocket.

Another time you tell your grandma, “Grandma, see, I am a grown-up now.”

“Good, now, you can sit here and knit (编织) this for me while I go and have a rest.” To show that you are no more a child, you have to sit there the whole afternoon doing the work, which only a grown-up can do. After an hour, you find it hard to do, and give the knitting basket back to your grandma. Your grandma criticizes your work. You hear what she says, “Such a big girl can’t do such easy work.” You wish then you were a child again.

But the fact is, you are growing up, and you can’t help it. That’s the way it goes!

1.The passage is told about _______ problems.

A. a growing-up boy’s B. an old woman’s

C. a teenage girl’s D. a grown-up’s

2.How does she know her prayer has been answered?

A. She is no longer a kid.

B. People begin to call her teenager.

C. She can join women in all kinds of activities.

D. People treat her as a young lady.

3.From what her parents say, we know _________.

A. they still regard her as a child

B. they don’t want her to spend money

C. it’s dangerous for a girl to spend money

D. they love her more than before

4.Having heard her grandma’s criticism(批评), _________.

A. she has to lie in bed, doing nothing

B. she wishes she were not growing up

C. she knows she has already worked the whole afternoon

D. she finds it isn’t her turn to do knitting

语法填空

In my elementary years, there was a little girl in the class who worked very hard but somehow could never do satisfactorily in her lessons.

The teacher asked me to help her, and it was obvious 1. she expected a lot from me. But as a young boy, restless, thoughtless, I always tried 2. (avoid) her so as to get more time to enjoy myself.

One day before the final exam, she came up to me and said, “Could you please explain this to me? I want very much to do 3. (well) this time.” I started explaining, and finished in 4. hurry. 5. (pretend) not to notice her still confused eyes, I ran off quickly. Not 6. (surprise), she again did very badly in the exam. And two months 7.， at the beginning of the new semester, word came of her death of blood cancer. No one ever knew about the little task I failed to fulfill, but I couldn't forgive 8.．I simply couldn't forget her eyes, 9. seemed to be asking, “Why didn't you do a little more to help me, when it was so easy for you？”

It was the very starting point of my life, for I 10. (begin) to understand the word “responsibility” and to learn to always do my duties faithfully and devotedly.

试题分类