2. 外语
  3. We must______that the experiment is controlled as rigidly as possible.

We must______that the experiment is controlled as rigidly as possible.

admin2017-04-12  23
问题 We must______that the experiment is controlled as rigidly as possible.
选项 A、assure
B、secure
C、ensure
D、issue
答案C
解析 ensure vt.保证，担保。
转载请注明原文地址:https://jikaoti.com/ti/YrmYFFFM
0

考博英语

相关试题推荐
随机试题
最新回复(0)