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[Sentence Correction]

试题详情

题目:

Ozone, a special form of oxygen that screens out harmful ultraviolet rays, reaches high concentrations twelve miles above Earth, where it has long appeared that it was immune from human influence; we have now realized, though, that emissions of industrial chlorofluorocarbons deplete the ozone layer.

选项:

A、has long appeared that it was immune from
B、has long appeared to have been immune from
C、has long appeared as being immune to
D、had long appeared immune to
E、had long appeared that it was immune to

答案:

D

提问:

1,不理解为何这里用过去完成时 2,immune to和from的区别是什么?在这里是一个考点吗?

解答:

点赞3
阅读3507
解答: 王文静

提问:

请问金老师,为什么说这道题A选项,后面的那个it指代了ozone之后前面的it就不能指代ozone了?it形式主语的话算指代一个句子,所以如果该句出现it指代其他东西,就是错的?B两个have been动作有先后顺序吗?

解答:

点赞1
阅读2329
解答: 金栩竹老师

提问:

1,不理解为何这里用过去完成时 2,immune to和from的区别是什么?在这里是一个考点吗?

解答:

点赞3
阅读3508
解答: 王文静老师

提问:

杀了DE 前三个from和to不会比,根据immune前面错选了B

解答:

点赞0
阅读3474
解答: sysadmin老师

提问:

请老师讲下B

解答:

点赞0
阅读3432
解答: sysadmin老师

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