Some scientists think that it will take of years to make robots do most work for humans.

发布时间：2020-08-22 00:22:50

Some scientists think that it will take      of years to make robots do most work for humans.
A. hundreds               B. hundred                C. thousand

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解析：考查数词的用法。固定短语hundreds of“成百上千”、thousands of“成千上万”；如果前面没有具体的数字，常用复数加of结构表示不确切的数字。
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