Sam, an unemployed piano tuner, said it was only the second thing he had ever won in his life. The first thing was an Afghan blanket at a church raffle （抽奖）when he was 25 years old. But this w
下列化学符号书写正确的是（ ） A．两个水分子﹣2H2OB．氯化铝﹣AlClC．两个氯原﹣Cl2D．正二价的铜元素﹣Cu2+
抵制“三俗”之风，要大力发展先进文化。发展先进文化的根本要求和根本保证是 A.建设社会主义精神文明 B.弘扬我国的民
You can find all kinds information in just 76. __________a few minute on the Internet. It’s like going to a 77. __________huge library without have to walk around to find78. __________your books. Re
两根互相平行的金属导轨水平放置于图9-1-19所示的匀强磁场中，在导轨上AB和CD可以自由滑动.当AB在外力F作用下向右运动时，下列说法正确的是（ ）
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阅读下面的文字，完成5―7题。“于丹式解读”：传播文化经典引起学界关注近一段时间，于丹成了媒体焦点人物。一边是她的书销售异常火爆，先是《
When you read the book, you’d better make a mark ______ you have any questions. A. at which B. at where C. the place where D. where
