27.We can learn from the first paragraph that ______ ?

　　A.Dolphins have smaller brains than that of men.

　　B.Dolphins have had their intelligence not as long as men.

　　C.Dolphins have had their intelligence thirty times as long as men.

　　D.Dolphins are much more clever than men.

　　答案：C

　　[解析]这是一个细节理解题，考的是第一自然段中的一个细节。第一自然段的前部分讲到“Dolphins’brains are 30 percent larger than those of people, and are equally complex.”(海豚的大脑比人类的大30%，而且跟人类大脑的复杂程度差不多)，故A)，D)均不正确。第一段最后一句话讲到“fossil(化石)evidence reveals that they have had their larger brains for thirty million years, compared to around a million years for man.”(从海豚的化石证据显示，他们拥有这么大型的头脑已有3千万年的历史了，而我们人类的头脑只有一百万年的历史。)C为正确答案。

　　28.It can be inferred from the passage that_____.

　　A.Dolphins' brains are much larger and more complicated than that of men.

　　B.Dolphins are able to display the ability of reasoning.

　　C.Dolphins can play music like human beings.

　　D.Dolphins often held their babies up to breathe fresh air.

　　答案：B

　　[解析]从inferred一词得知此题是推理题。此题的推理依据是文章第一段，“During experiments dolphins have learnt to perform tasks that require logical reasoning”(在实验过程中，海豚们学会了做那些需要逻辑推理才能完成的工作)。由此我们可以判断出，海豚是能够有推理能力的，故选B。

　　29.Which of the following is true according to the passage?

　　A.Though dolphin is a kind of fish, it can breathe air like us.

　　B.Dolphins often kill sharks for food.

　　C.Dolphins probably communicate with each other through a kind of sound.

　　D.Dolphins have formed their own groups and they help only the members in the same group.

　　答案：C

　　[解析]这是一个细节理解题，从第二段的最后一句可以得知“The sounds they make also appear to be some kind of communication.”(他们发出的声音似乎就是一种交流的方式)，故应选C。

　　30.What would the next paragraph probably talk about?

　　A.Why dolphins are as intelligent as human beings.

　　B.How the dolphins help and care men in modern times.

　　C.How the dolphins were killed for commercial purposes and what we should do to protect them

　　D.What more discoveries scientists have made about dolphins.

　　Ⅴ.Reading Comprehension

　　That “Monday morning feeling” could be a crushing pain in the chest which leaves you sweating and gasping for breathe.Recent research from Germany and Italy shows that heart attacks are more common on Monday mornings and doctors blame the stress of returning to work after the weekend break.

　　The risk of having a heart attack on any given day should be one in seven, but a six-year study revealed that the average person had a 20 per cent higher chance of having a heart attack on a Monday than on any other day.Working Germans are particularly vulnerable(敏感的，脆弱的), with a 33 percent higher risk at the beginning of the working week. Non-workers, by comparison, appear to be no more at risk on a Monday than any other day. Another study of 11,000 Italians identified 8 am. on a Monday morning as the most stressful time for the heart. and both studies showed that Sunday is the least stressful day, with fewer heart attacks in both countries. The research also indicates that the Monday morning peak seems to be consistent from northern Germany to southern Italy in spite of the differences in diet and lifestyle.