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  3. In June of 1973, nine whales beached on the Florida coast. Beaching means swimming out of the ocean onto the beach, and usually

In June of 1973, nine whales beached on the Florida coast. Beaching means swimming out of the ocean onto the beach, and usually

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问题     In June of 1973, nine whales beached on the Florida coast. Beaching means swimming out of the ocean onto the beach, and usually dying there. No one knows why they do it, but a number of whales beach themselves every year. Some people think beaching is an accident.
    Perhaps the whales get confused. Scientists who studied the beaching of three dozen whales in Australia think the whales may have been confused by loud noises. Whales can tell where they are by sounds. They send out sounds and listen as they travel past or bounce off objects. Two days before these thirty-six whales beached, loud guns had been fired for two hours. The loud sounds may have confused the whales. Their confusion might have caused them to wander into low water.
Whatever the reason whales beach, it is a sad event. People try to save them, but very few beached whales live. One whale that was rescued from beaching in Florida lived for forty-five days. That is the longest a beached whale has ever survived. And it lived that long only because it got attention from doctors.
    All over the world, scientists rush to whale beachings as soon as they hear about them. They hope to learn why whales beach, and how to save them.
To make the point that beached whales do not survive, the author uses _____
选项 A、the opinions of famous people
B、a vivid word picture
C、an example
D、a firsthand story
答案C
解析 第三段中提到作者以佛罗里达州一条搁浅的鲸鱼为例，证明鲸鱼一旦搁浅就注定死亡。C项是正确的。
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