The main purpose of the passage is to______. According to the passage, what is one disadvantage of skyscrapers that have mirror

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问题 The main purpose of the passage is to______.
According to the passage, what is one disadvantage of skyscrapers that have mirrored walls?

选项 A、The exterior surrounding air is heated.
B、The windows mast be cleaned daily.
C、Construction time is increased.
D、Extra air-conditioning equipment is needed.

答案A

解析 在第三段中可以看到mirror-walled skyscrapers raise the temperature of the surrounding air,由此可以推出A为正确答案。
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