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幅值裕度是讲

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pow▁▁ful 强大的;强效的

A. er
B. or
C. ar
D. ir

Try to s________ every opportunity to practice English.

A. eek
B. eed
C. eak
D. oak

Our boss is leaving on a trip and needs those papers __________.

A. urgentes
B. urgente
C. urgently
D. urgenting

Smoking is ________to lung cancer and many other diseases.

A. relate
B. related
C. relates
D. relating

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