A-A+

According to Paragraph 4 smart windows are th

2022-08-05 15:00:23 问答库阅读 169 次

问题详情

According to Paragraph 4, smart windows are the windows that

　　A.are costed.

　　B.are glazed.

　　C.have several layers.

　　D.can change color.

参考答案：D

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