新概念2第21课后面的练习题第一题为什么D不对?还有第四题B为什么不对?请讲得详细一点文章：Aeroplanesareslowlydrivingmemad.Ilivenearanairportandpassingplanescanbeheardnightandday.Theairportwasbuil

Question

新概念2第21课
后面的练习题第一题为什么D不对?
还有第四题B为什么不对?
请讲得详细一点
文章：Aeroplanes are slowly driving me mad.I live near an airport and passing planes can be heard night and day.The airport was built years ago,but for some reason it could not be used then.Last year,however,it came into use....
第一题：The airport -------.
A.has been used since it was completed.
B.has never been used.
C.came into use recently
D.has just come into use
第四题：It could not be used then.It wasn't -------- to use it.
A.able B.allowed C.impossible D.possible

Answer 1

我不确定我的回答是对的,仅供参考
第四题前面有couldn't be ,因为can be是“可能是”的意思,所以can't be 就应该是不可能,C.impossible就是“不可能”,答案应该是C
第一题当中D的意思是“刚刚开始使用”,文章中有提到“机场是许多年前建的”“它去年开始使用”,所以,D,不对,去年,挺长时间.
C最近才得以使用,和D差不多,pass
B从来没用过,那当然错了
排除法,A
此答案仅供参考,仅供参考!