单项选择题

A2 题型 42岁女性放置宫内节育器10年准备取出,适宜的时间是
A、月经干净后1~3天
B、月经干净后3~7天
C、月经干净后7~10天
D、月经干净后10~12天
E、月经干净后14~16天

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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

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