No matter how frequently__________, the works of Beethoven always att-考呗网题库移动版

单选题 No matter how frequently__________, the works of Beethoven always attract large audiences.

A．performed
B．performing
C．to be performed
D．being performed

参考答案A

解析:

单选题 He had been there a time, and knew everyone well.

A．much
B．many
C．some
D．few

单选题 He said he liked traveling by train, but after six hours standing in the corridor, he changed his __________

A．sound
B．voice
C．tone
D．tune

单选题 Human behavior is mostly a product of learning, whereas the behavior of an animal depends mainly on__________

A．consciousness
B．impulse
C．instinct
D．response