由于流体蒸发时要（）热量，因此液体蒸发有（）作用。
A．放出，制冷
B．放出，加热
C．吸收，加热
D．吸收，制冷
参考答案：D
The Smiths consider _____ a computer, which is commonly considered _____ a great help in their work and study.
A．to buy; to be
B．buying; to be
C．to buy; being
D．buying; being
今年是农历的己丑年，后年就是农历的辛卯年。
