( )的员工更看重工作所带来的报酬，诸如工资、奖金等。
A．内源性动机
B．外源性动机
C．生理性动机
D．精神性动机
参考答案：B
.
It was ___ he came back from Africa that year ___ he met the girl he would like to marry.
A．when; then
B．not; until
C．not until; that
D．only; when
简述玉米加工副产品的利用
