单选Most environmental problems exist because adequate for preventi_英语解答

单选Most environmental problems exist because adequate for preventing them __ takeen in the past.
A.was not B.were not being C.were not D.being not
答案怎么不是B?

人气：294 ℃　时间：2020-02-04 06:03:34

解答

这句话的意思是：大多数环境污染问题的存在是因为充分预防措施在过去没有被重视.首先这个句子的重点是~预防措施没【被】重视,所以答案一定要体现【被动】句意是说污染问题还在是因为【过去】防护措施没被重视,而不...