Computers first came into use ________.A. in 1950s B. on the 1950
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Computers first came into use ________.
A. in 1950s B. on the 1950s C. in the 1950s |
答案
| C |
解析
试题分析：句意:电脑首次被使用是在20世纪50年代。在某个世纪某个年代应该用介词in，还应该在in后用定冠词，在数字后加s,根据句意故选C。 |
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