判断题

WHO指出影响人类健康的因素,行为与生活方式所占比例是90%。()

答案：错误

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单项选择题

Study the uses of while in the following sentences and match its usage with the category listed below.
( )While my grandfather is something of a computer expert, my grandmother is a computer illiterate.

A．During the time that sth is happening
B． As long as
C． Although
D．Whereas

（）是发声的动力，也是有声语言表达的手段之一，在播音主持语音发声艺术中有特别重要的地位。

答案：气息