单项选择题

Early signs of（）seen in the herbal medicine study are extremely encouraging and based upon these data, we are now planning a registration program.

A. faculty
B. reception
C. deterioration
D. efficacy

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单项选择题

The reciprocal hatred between various members of different races underlies the difficulty of integration in the United States（）

A．hidden
B．profound
C．mutual
D．racial

单项选择题

Ms. Rice, with customary class, simply expressed hope that this episode wouldn’t （）the charity in spite of the previous scandals.

A. taint
B. enhance
C. sprain
D. sponsor

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