单项选择题

Questions 29 to 31 are based on the passage you have just heard.

A．About two million.
B．About three million.
C．About five million.
D．About six million.
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单项选择题
What does our atmosphere do
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.
单项选择题
A．Late summer is sunny season.B．Late summer is hurricane season.C．Late summer is rainy season.D．Late summer is cloudy season.
A．Late summer is sunny season.
B．Late summer is hurricane season.
C．Late summer is rainy season.
D．Late summer is cloudy season.
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