It may be five to ten years______we can test this medicine on human patients.

admin2015-04-14  29

问题 It may be five to ten years______we can test this medicine on human patients.

选项 A、since
B、after
C、before
D、when

答案C

解析
转载请注明原文地址:https://jikaoti.com/ti/9sNGFFFM
本试题收录于: 英语题库普高专升本分类
0

最新回复(0)