单选题：根据以下材料，回答题：According to the passage．how do carbon dioxide an

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根据以下材料，回答题：

According to the passage．how do carbon dioxide and other greenhouse gases affect the earth-atmosphere system?

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The underlined word “hacker” (Para. 1) most probably means “

The underlined word “hacker” (Para. 1) most probably means “__________ ”A．A　high

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本公文的发文单位应为（　　）。

本公文的发文单位应为（　　）。 A．上海市人民政府 B．上海市人民政府办公厅 C．上海市政务公开办 D．上海市政府各委、办、局

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The project funded by the National Science Foundation ______

The project funded by the National Science Foundation __________.A．A　was first p

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Specialty goods are similar to convenience goods in that peo

Specialty goods are similar to convenience goods in that people know the product

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Before making the final decision of whether or not to buy sh

Before making the final decision of whether or not to buy shopping goods, a cust

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