题目内容

Clear skies are no ___of continued fine weather; it may rain in the evening.

A. sign
B. guarantee
C. clue
D. trace

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It is the hospital's policy to___ any patient who is suffering from an infectious disease.

A. differentiate
B. distinguish
C. isolate.
D. separate

Patients who are given the new drug will be asked to___ their heartbeat, temperature and blood pressure.

A. watch
B. care
C. notice
D. monitor

I won't take his___ seriously-he often says he will punish me,but he never does.

A. threats.
B. words.
C. throws
D. theaters

The car that had been following ours suddenly ___and overtook us.

A. accessed
B. Speed up
C. speed
D. Accelerated

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