单选题 {{B}}Passage Two{{/B}}
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.
单选题 The subject of this passage is ______.
【正确答案】 B
【答案解析】全文讲的是鲸鱼搁浅的事。选项B是正确的。其他选项都是局部,文章提到,但不是主题。
单选题 One reason whales beach may be ______.
【正确答案】 D
【答案解析】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。选项D是正确的。
单选题 Whale beachings are sad events because ______.
【正确答案】 A
【答案解析】第三段。一旦鲸鱼搁浅,等待它的只有死亡。选项A是正确的。选项B可能是事实,但文中并未提及鲸鱼死后的处理。
单选题 To make the point that beached whales do not survive, the author uses _______.
【正确答案】 C
【答案解析】第三段。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。选项C是正确的。