制冷装置热气融霜是利用（）来融霜。
A.低压水蒸气
B.热空气
C.制冷压缩机吸口过热蒸气
D.制冷压缩机排气
参考答案：D
The money he spent within a month________more than 1,000 dollars. [ ]
A. added
B. added to
C. added up to
D. was added up
长江三峡，地灵人杰。这里，孕育了战国时期最伟大的浪漫主义诗人（）。
A.毛 * *
B.郭沫若
C.屈原
D.王昭君
