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问题
解答题
口算比赛,小珍做了200道,错误率为5%,做对了多少道?
答案
200×(1-5%),
=200×95%,
=190(道);
答:做对了190道.
选择题
Put the books back ____ they belong after you have finished them.
A. where
B. to where
C. to which
D. to the place
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问答题 简答题
监控装置有哪几种防溜功能?动作后如何解锁?
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