We must________that the experiment is controlled as strictly as possible.

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问题 We must________that the experiment is controlled as strictly as possible.

选项 A、assure
B、secure
C、ensure
D、issue

答案C

解析 assure:使确信,向……保证,后面常跟人作宾语;secure: (尤指经过努力)获得,实现,安全的,可靠的;ensure:保证,确保,后面可以接从句作宾语;issue:发行(新的一批),公布。根据句意和空后that引导的从句可知,选C。
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本试题收录于: 英语题库普高专升本分类
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