—What do you think of the concert
—I really enjoy it. I didn't expect it was （）wonderful.

单项选择题More than one （）the people heart and soul.

A. official has served
B. officials have served
C. official has served for
D. officials have served for

单项选择题The police have （）power to deal with such matters by （）law.

A. the the
B./ /
C./ the
D. the /

单项选择题Listen! His family must be quarrelling, （）

A. mustn't it
B. isn't it
C. aren't they
D. needn't they

单项选择题That she hadn't kept her（）on her work resulted in the failure.

A. head
B. heart
C. brain
D. mind

单项选择题科学知识再生产的主要途径是( )。