(1.5 分)
The heat and moisture content in the atmosphere are
.
A.endless exchange with Earth’s surface B.occasional change with Earth’s surface C.seasonally change with Earth’s surface D.exchange only within the atmosphere正确答案A
(1.5 分)
The heat and moisture content in the atmosphere are
.
A.endless exchange with Earth’s surface B.occasional change with Earth’s surface C.seasonally change with Earth’s surface D.exchange only within the atmosphere正确答案A