单项选择题

We must （）that the experiment is gong to be controlled as rigidly as possible.

A. assure
B. secure
C. ensure
D. endure

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单项选择题
After the divorce, he began to feel tired and resigned and did not want to do anything else but （）himself to drinking.

A. devote
B. adapt
C. abandon
D. adjust
单项选择题
We aim to ensure that all candidates are treated fairly and that they have equal （） to employment opportunities.

A. entrance
B. entry
C. access
D. admission
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