（）是与社会意义相联系的动机，是社会要求在学习上的反映。
A.直接学习动机
B.内部学习动机
C.间接学习动机
D.外部学习动机
参考答案：C
— Perhaps we can go to the home for the elderly to do some voluntary work.
— ______ We should give the elderly a warm hand as often as possible.
A．I can’t agree more.
B．Do you think so?
C．Are you serious?
D．You must be joking!
燃煤的热量其现行法定计量单位是（）。
A.卡
B.焦
C.大卡/千克
