Not until the beginning of the twentieth century did the human beings learn to prevent the disease from spreading.

admin2011-01-10  32

问题 Not until the beginning of the twentieth century did the human beings learn to prevent the disease from spreading.

选项

答案直到二十世纪初,人类才学会防止疾病的传播。

解析
转载请注明原文地址:https://kaotiyun.com/show/dufK777K
0

最新回复(0)