What disadvantages do people have if working at night?
A.They lose the chance to gaze stars.
B.They have a higher risk of health problem.
C.They have less exposure to white light.
D.They are to blame for light pollution.

A.They
B.
B.They
C.
C.They
D.
D.They
E.

【参考答案】

B
解析：根据题干中的working at night将本题出处定位到末段。该段提到，夜晚工作的人可能面临最大风......

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