题目内容

Tom will look for a new job _______ his boss offers him more money.

A. as soon as B. as if

C. as long as D. unless

 

D

【解析】

试题分析:句意:如果老板不给汤姆提供更多的钱,他将要找一份新的工作。A. as soon as一…….就;B. as if似乎;C. as long as一旦;D. unless 如果不,除非。根据句意,故选D.

考点:考查连词的用法。

 

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Have you ever dreamed of visiting a planet in the Milky Way? While the trip sounds exciting, it would take years and years to reach the place that we are going to. So in the future, bedtime for astronauts may be more than a few hours of regular shut-eye. They would have to sleep for years.

European researchers are now doing hibernation experiments. The study may help them understand whether humans could ever sleep through the years it would take for a space flight to distant planets. “If there was an effective technology, it could make deep-space travel come true,” said Mark Ayer of the European Space Agency last month.

What seems like science fiction is not completely impossible. Researchers have been able to use chemicals to put living cells into a sleep-like state where they don’t age. They have now moved on to small, non-hibernating mammals like rats. The results will be out soon.

A major challenge is the fact that cells can be very simple systems, but body organs are far more complex(复杂的).

“It's like moving from a simple Apple computer to a supercomputer,” said Marco Biggiogera, a hibernation researcher at Italy’s University of Pavia.

Just like bears and frogs, the hibernation of human beings would cause a person’s metabolism (新陈代谢) to lower so they would need less energy.

Medical research, however, is just half of a space flight hibernation system.

There is the challenge of designing a suitable protective place to live. Such a place would provide the proper environment for hibernation, such as the proper temperature. It would also have to monitor (监控) life functions and serve the physiological needs of the hibernator.

According to Ayer, the six-person Human Outer Planets Exploration Mission to Jupiter’s moon (木星的卫星) Callisto, could be an opportunity to use human hibernation. The mission aims to send six humans on a five-year flight to Callisto, where they will spend 30 days, in 2045.

根据材料内容选择最佳答案, 将其标号填入题前括号内。

1.What is the meaning of “hibernation” in Chinese in this passage?

A. 冬眠 B. 休息 C. 催眠 D. 瞌睡

2.According to the article, the research _______.

A. is just an idea

B. is always a science fiction

C. has already finished successfully

D. has made some progress

3.In a hibernating situation, a person needs _______.

A. less sleep B. more food

C. less energy D. more movement

4.The first try of the hibernation technology_____ the six person Human Outer Planets Exploration Mission to Jupiter’s moon Callisto.

A. will be B. has been planned for

C. is certain to be D. may be

5. What’s the best title for the passage?

A. Hibernation study for space travel

B. Welcome to our space travel

C. To hibernate, to live longer

D. Welcome to the Milky Way

 

Do animals have a culture? What do we mean by “culture”? Lately social scientists have begun to ask if culture is found just in humans, or if some animals have a culture too. When we speak of culture, we mean a way of life a group of people have in common. Culture includes the beliefs and attitudes we learn. It is the patterns of behavior that help people to live together. It is also the patterns of behavior that make one group of people different from another group.

Our culture lets us make up for having lost out strength, claws, long teeth, and other defenses. Instead we use tools, cooperate with one another, and communicate with language. But these aspects of human behavior, or “culture”, can also be found in the lives of certain animals. Animals can make tools, for example. We used to think that the ability to use tools was the dividing line between human beings and other animals. Lately, however, we have found that this is not the case. Chimpanzees can not only use tools but actually make tools themselves. Animals can also share knowledge with each other and use their own language to communicate. So it may be important for us to know that the line dividing us from animals is not as clear as we used to think.

1. When we talk about “culture”, we mean __________.

A. book language of behavior we learn

B. the patterns of behavior we learn

C. traditional ideas

D. people’s habits

2.We thought ________ was the biggest difference between human beings and other animals.

A. cooperating with one another

B. communicating with language

C. using tools

D. losing long teeth

3.The example of chimpanzees shows __________.

A. animals are the same as human beings

B. animals can be as clever as human beings

C. there is no differences between humans and other animals

D. animals may have a culture like our own

4. It’s ________ that animals have a culture too.

A. sure B. unbelievable

C. possible D. important

5. The main idea of the passage is _______.

A. chimpanzees can learn to use sign language to make sentences

B. other animals can invent tools

C. knowledge and communication are no longer signs of only human behavior

D. the line dividing human culture from animal culture is not as clear as we might think

 

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