四六级

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　　2017年12月英语四级听力篇章真题原文

　　Section C

　　Passage 1

　　Some people wonder why countries spend millions of dollars on space projects. They want to know how space research helps people on Earth. Actually space technology helps people on Earth every day. This is called "spin-off technology."

　　Spin-off technology is space technology that is now used on Earth.

　　In early space programs, such as the Apollo missions of the 1960s and 1970s, and in the Space Shuttle missions today, scientists developed objects for the astronauts to use on the moon and in space. We now use some of these objects every day.

　　For example, we have Quartz crystal clocks and watches accurate to within one minute a year. We purify the water we drink with a water filter designed for the astronauts' use in space.

　　The cordless, hand-held tools we use in our homes, such as vacuum cleaners, flashlights, drills and saws came from the technology of these early space programs.

　　On cold winter days we can stay warm with battery-operated gloves and socks, and specially made coats and jackets. All of these clothes are similar to the spacesuit designs that kept astronauts comfortable in the temperatures of the moon, and are spin-offs from space technology.

　　These products are only a few examples of the many ways space technology helps us in our everyday lives. No one knows how new spin-off technology from the International Space Station will help us in the future.

　　Q16: What do some people want to know about space exploration?

　　Q17: What did scientists do for the space shuttle missions?

　　Q18: What does the speaker say about Quartz crystal clocks and watches?

　　Passage 2

　　If you are lost in the woods, a little knowledge can turn what some people call a hardship into an enjoyable stay away from the troubles of modern society. When you think you are lost, sit down on a log, or a rock, or lean against a tree, and recite something that you have memorized, to bring you mind to a point where it’s under control. Don’t run blindly. If you must move, don’t follow a stream unless you know it, and in that case, you are not lost. Streams, normally flow through wetland before they reach a lake or a river. Though there are more eatable plants, there may also be wild animals, poisonous snakes, and other hazards. Many experts feel that it’s wisest to walk uphill. At the top of most hills and mountains, are trails leading back to civilization. If there are no trails, you are much easier to be seen on top of a hill, and you may even spot a highway, or a railroad from this point. Nowadays, the first way someone will search for you is by air. In a wetland, or in dense growth, you are very hard to spot. Anytime you go into the woods, somebody should know where you are going, and when you expect to return. Also, when someone comes looking, you should be able to signal to them.

　　Questions 22-25 are based on the passage you have just heard.

　　22. What does the speaker advise you to do first if you are lost in the woods?

　　23. What will happen if you follow an unknown stream in the woods?

　　24. What do many experts think is the wisest thing to do if you are lost in the woods?

　　25. What should you do before you go into the woods?

　　2017年12月英语四级听力篇章真题答案

　　Section C

　　Passage 1

　　16. D) How space research benefits people on Earth.

　　17. B) They developed objects for astronauts to use in outer space.

　　18. C) They are extremely accurate.

　　Passage 2

　　22. C) Sit down and try to calm yourself

　　23. B) You may expose yourself to unexpected dangers.

　　24. D) Walk uphill.

　　25. A) Inform somebody of your plan.

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