Scientists think that there has been life on Earth for _______ years. A. m
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Scientists think that there has been life on Earth for _______ years.
A. millions
| B. millions of
| C. million of
| D. million
|
|
答案
B |
解析
试题分析:此题重点考查数词的表达法,如果有确切的数字 thousand 或million后面直接跟名词,thousand 和million等不用复数,也不用of,而thousands of,millions of直接跟名词或代词,前面不用确切的数字表示约数,根据题意故选B 点评:正确区分是确切数还是不确切数,二者不能混淆,关键是thousand和million加不加s。 |
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