第1题
A.One million.
B.93 million.
C.Two million.
D.100 million.
第3题
A.It absorbs the heat from the ground and sends it to the Sun.
B.It absorbs the heat from the Sun and emits it back to the Earth.
C.It absorbs the heat from the Sun and emits it the same way.
D.It absorbs the heat the ground emits and sends some of it back to the Earth.
第4题
A.The poles
B.The equator
C.The north temperate zone
D.The south temperate zone
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