According to the passage,what is one disadvantage of skyscrapers that have mirrored walls?A. The exterior surrounding air is heated。B. The windows must be cleaned daily.C. Construction time is increased.D. Extra air-conditioning equipment is needed.

According to the passage,what is one disadvantage of skyscrapers that have mirrored walls?

A. The exterior surrounding air is heated。

B. The windows must be cleaned daily.

C. Construction time is increased.

D. Extra air-conditioning equipment is needed.


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