问答题
{{I}}Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be read at normal speed, listen and try to understand the meaning. For the second and third readings, the passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be read at normal speed again and during this time you should check your work.
You will then be given 2 minutes to check through your work once more.
Please write the whole passage on ANSWER SHEET ONE.
Now listen to the passage.{{/I}}
【正确答案】
【答案解析】[听力原文]
{{B}} Dolphins{{/B}}
Dolphins are social animals./Many of them even enjoy being around humans./In addition to being playful, they are helpful to men./For example, as early as 400 B.C. ,/the Greek poet Arion was saved from drowning by a dolphin./Even since then, dolphins have been helping swimmers who are in trouble./Swimmers, however, are not the only humans they help./In some parts of the world, they help men catch fish./
Dolphins are very clever./A dolphin's brain is even larger than a haman brain./Therefore, some people think a dolphin must be smarter than a man./But of course, brain size is not the only measure of cleverness./ Besides, measuring dolphin's cleverness in other ways is not possible since men cannot talk with them./But we can almost be sure that dolphins can talk with each other./They make different sounds which seem to be at least a form of language.