根据下面内容，回答题：

　　In June of 1973, nine whales beached on the Florida coast. Beaching means swimming out of theocean onto the beach, and usually dying there. No one knows why they do it, but a number of whalesbeach themselves every year. Some people think beaching is an accident.

　　Perhaps the whales get confused. Scientists who studied the beaching of three dozen whales inAustralia think the whales may have been confused by loud noises. Whales can tell where they are bysounds. They send out sounds and listen as they travel past or bounce off objects. Two days beforethese thirty-six whales beached, loud guns had been fired for two hours. The loud sounds may haveconfused 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 fewbeached 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 at-tention 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.

　　52The subject of this passage is__________.

　　A.the Florida BeachesB.Beached WhalesC.Whale SoundsD.Medical Treatment of Whales

　　参考答案：B

　　参考解析：

　　全文讲鲸鱼搁浅的事。B项是正确的。其他选项都很片面，文章中虽然提到，但不是主题。

　　53One reason whales beach may be

　　A.because they are hungryB.because they are attackedC.that people can study themD.that they are confused

　　参考答案：D

　　参考解析：

　　第二段科学家认为鲸鱼是被什么困惑误游到低水位的沙滩。D项是正确的。

　　54Whale beachings are sad events because

　　A.people know the whales are going to dieB.the whales have to be carted away and buried .~..C.the whales cannot be used as foodD.no one can use the beach on those days

　　参考答案：A

　　参考解析：

　　第三段中提到一旦鲸鱼搁浅，等待它的只有死亡。A项是正确的。B项可能是事实，但文中并未提及鲸鱼死后的处理。

　　55To make the point that beached whales do not survive, the author uses

　　A.the opinions of famous peopleB.a vivid word pictureC.an exampleD.a firsthand story参考答案：C

　　参考解析：

　　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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