[单选题]what do we know about nora?

正确答案 ：A

she prefer a room of her own.

[单选题]Every few years, the coal workers ______ their lungs X-rayed to ensure their health.

正确答案 ：B

have

解析：

根据时间状语every few years,可判断本句应为一般现在时，因此答案选B。

[单选题]

正确答案 ：E

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