单项选择题

Why do people need to do arm exercises（）

A．Because their arms are too fat.
B．Because their arms are too flabby.
C．Because arm exercises can help lower the blood pressure.
D．Because arm exercises can keep them healthy.

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问答题
Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be done 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 done at normal speed again and during this time you should check your work.
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