单项选择题

Conversation One

A．The heat from the sun is too much.
B．Some of the radiation is held back.
C．There is too much carbon dioxide.
D．The greenhouse gases warm the atmosphere.
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单项选择题
A．Handing in the letter the woman already has.B．Having a new letter of recommendation.C．Giving up the application for the position.D．Writing the recommendation letter by herself.
A．Handing in the letter the woman already has.
B．Having a new letter of recommendation.
C．Giving up the application for the position.
D．Writing the recommendation letter by herself.
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