题目内容

How long will be the program called Cartoon Series？

A. For half an hour
B. For an hour and a half
C. For 1/3 hour
D. For 2/3 hour

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Why does Mary write to Lucy？

A. Because she wants to play a camp with Mary.
Because she wants to enjoy the sunshine with Mary.
C. Because she wants to introduce a new drink to Mary.
D. Because she wants to share her drink with Mary.

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【C7】

A. rarely worthless
B. nearly useless
C. almost of no use
D. rarely invaluable

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It is hard to track the blue whale, the ocean's largest creature ,which has almost been killed off by commercial whaling and is now listed as an endangered species. Attaching radio devices to it is difficult, and visual sightings are too unreliable to give real insight into its behavior.
So biologists were delighted early this year when, with the help of the Navy ,they were able to track a particular blue whale for 43 days, monitoring its sounds. This was possible because of the Navy's formerly top-secret system of underwater listening devices spanning the oceans.
Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential enemies.
Earth scientists announced at a news conference recently that they had used the system for closely monitoring a deep-sea volcanic eruption for the first time and that they plan similar studies.
Other scientists have proposed to use the network for tracking ocean currents and measuring changes in ocean and global temperatures.
The speed of sound in water is roughly one mile a second-slower than through land but faster than through air. What is most important, different layers of ocean water can act as channels for sounds, focusing them in the same way a stethoscope(听诊器) does when it carries faint noises from a patient's chest to a doctor's ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
The passage is chiefly about ______.

A. an effort to protect an endangered marine species
B. the civilian use of a military detection system
C. the exposure of a U. S. Navy top-secret weapon
D. a new way to look into the behavior. of blue whales

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听力原文：W: Good evening. I'm Roseanne, your flight attendant. Welcome aboard.
M: Hello, I've got seat A 6. I hope it's by a window so that I can see the view.
Where did this conversation probably take place？

A. On a train.
B. On a boat.
C. On a plane.
D. On a bus.

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How long will be the program called Cartoon Series？

A. For half an hour B. For an hour and a half C. For 1/3 hour D. For 2/3 hour

Why does Mary write to Lucy？

【C7】

听力原文：W: Good evening. I'm Roseanne, your flight attendant. Welcome aboard.M: Hello, I've got seat A 6. I hope it's by a window so that I can see the view.Where did this conversation probably take place？

A. For half an hour
B. For an hour and a half
C. For 1/3 hour
D. For 2/3 hour

听力原文：W: Good evening. I'm Roseanne, your flight attendant. Welcome aboard.
M: Hello, I've got seat A 6. I hope it's by a window so that I can see the view.
Where did this conversation probably take place？