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.

admin2010-03-19  38
问题 We must______ that the experiment is controlled as rigidly as possible.
选项 A、secure
B、ensure
C、assure
D、issue
答案B
解析 此题考查动词词义。ensure 确保。issue为无关干扰词，发行：分配。
转载请注明原文地址:https://kaotiyun.com/show/Be9K777K
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)