Before the drug is used on human beings, experts have to______dogs.A、be experime

游客2025-03-08 23

问题 Before the drug is used on human beings, experts have to______dogs.

选项 A、be experimented
B、experiment
C、experiment with
D、experiment on

答案 D

解析 experiment on“对……进行实验”；experiment为不及物动词。

转载请注明原文地址:http://tihaiku.com/zcyy/3988425.html

相关试题推荐

随机试题

最新回复(0)

CanIlookabouttheroomsbeforeIdecidewhichroomI’dliketostayin?—Ofc