There is often______between becoming infected and the first signs of the illness.

admin2017-06-30  31

问题 There is often______between becoming infected and the first signs of the illness.

选项 A、a stop
B、an interruption
C、a lag
D、a lack

答案C

解析
转载请注明原文地址:https://kaotiyun.com/show/6hPR777K
0

最新回复(0)