超星 - Exercise for Unit 2 - 查题吧

单选题

Positive ______________ carries a strong message for children, as those who receive praise for good acts try harder to behave.

A. reinforcement
B. reinforcer
C. baggage
D. discord

单选题

An excellent character is one of the key factors in studying a complex subject: Being insistent, confident and ___________ are all important.

A. underlying
B. comforting
C. circuitous
D. decisive

单选题

It is important to assess your goals from time to time, ___________ where you are and where you want to be, and plan accordingly.

A. cue
B. suck
C. evaluate
D. reinforce

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