The letter Mary had looked forward to ____her last night and she was very excited．
A．reached B．reaching ' C．had reached D．has reached
In the countryside, ____car is not yet ____popular means for transportation．
A．/; a B．a; the C．the; / D．the; a
The news shocked the whole nation ____a strong earthquake hit Yushu on Apr．14, 2010．
A．what B．when C．that D．which
You ____be tired—you have worked only for ten minutes．
A．won't B．mustn't C．needn't D．can't
—Tom lost his job last week．
—___he is wandering in the street these days．
A．No doubt B．No way C．No wonder D．No problem
夏天，许多同学喜欢结伴到附近的河里游泳。请你根据以下要点为你班同学写一份游泳安全须知，提高同学们对安全的重视。
要点如下：
1、 不到无安全保障的水域游泳； 2、由熟悉水性的人陪同；
3、做充分的热身运动； 4、携带救生器材；
5、饭后或剧烈运动后不宜立即游泳。
注意：
1、 对所给要点逐一陈述，可适当增加细节，适当使用连词，使行文连贯。
2、 词数：150左右。
参考词汇：抽筋get cramp 救生圈 lifebuoy 剧烈运动 strenuous exercises
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