(C)What is the text mainly about?

　　A.The relationship between accents and social classes.

　　B.The Queen’s Christmas speeches on TV.

　　C.The changes in a person’s accent.

　　D.The recent development of the English language.

　　【答案解析】 选择C。主旨大意题。本文着重介绍50多年来，通过对英国女王讲话录音的研究发现英语语音变化的情况。所以本题的正确答案是C。

　　【例5】 (2008·四川卷C篇)Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or，in summer，they may think it is the heat. However，the real reason lies inside their bodies. At that time ­ about eight hours after you wake up ­ your body temperature goes down. This is what makes you slow down and feel sleepy. Scientists have tested sleep habits in experiments where there was no night or day. The people in these experiments almost always followed a similar sleeping pattern. They slept for one long period and then for one short period about eight hours later.

　　In many parts of the world，people take naps(小睡) in the middle of the day. This is especially true in warmer climates(气候)，where the heat makes work difficult in the early afternoon. Researchers are now saying that naps are good for everyone in any climate. A daily nap gives one a more rested body and mind and therefore is good for health in general. In countries where naps are traditional (传统的)，people often suffer less from problem such as heart disease.

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