题目内容
| He made another wonderful discovery, ________ of great importance to science. |
| A |
| 此题考查的是非限制性定语从句和插入语。 which 在从句中作主语,代替 the discovery。做这类题目的方法是先将插入语 I think 去掉,然后再将句子还原成为“He made another wonderful discovery,which is of great importance to science.”问题就迎刃而解了。 |
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________that he made an obvious mistake,Jeff went on with his speech.
| A.Not realized | B.Not realizing |
| C.Not to realize | D.Not to have realized |