W:Look, it' s so cloudy in the sky． M:Of course!The factories are giving out so
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W：Look, it' s so cloudy in the sky．
M：Of course!The factories are giving out so much smoke and dust．How can we have clean sky?
W：I hope they can do something to keep the air clean．
Why is it so cloudy in the sky?
[]A．There is too much cloud．
B．It is very late now．
C．There is too much smoke and dust．
试题答案
答案：C
解析：目的原因题．由男士的话“工厂向空气中排放出这么多的烟和灰尘．我们怎么可能有晴朗的天空？”可知，天空很阴暗是因为空中有太多的烟尘．故选C． |