ⅰ.单项填空
1.—the busy road is________danger to small children.
—yes.they will be in________danger if they play on it.
a./;/ b.a;a
c./;a d.a;/
解析: danger 指“具体危险或造成危险的事物”时,是可数名词,且在此处表示泛指,其前加不定冠词。in danger 处在危险中。句意为“交通繁忙的道路对小孩们是一种危险。”“是的。如果他们在路上玩是很危险的。”
答案: d
2.it is well known that using a bicycle rather than a car can greatly help________air pollution in many big cities.
a.collect b.cause
c.reduce d.produce
解析: collect 收集;cause 造成;reduce 减少;produce 产生。reduce air pollution 减少空气污染。
答案: c
3.bob thinks about nothing but com资源难易程度:★★★★★★★★★★★★★★★
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