单选题：Accordingtotheauthor,wecannotsleepwellwhenwe__________.

题目内容：

Accordingtotheauthor,wecannotsleepwellwhenwe__________. A．areworryingaboutoursafety
B．areoverworked
C．areinatent
D．areawayfromhome

参考答案：

答案解析：

Evolutionhasprogrammedmantosleepatnightchieflytohelphim_____

Evolutionhasprogrammedmantosleepatnightchieflytohelphim__________. A．maintainar

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WhichstatementisNOTmentionedinthepassage? A．Examinationscanmakestudentsanxious.

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Accordingtothewaysmallinexpensiveitemsaredisplayed,wecaninferthattheownerofasup

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Atthemomentshe__________withherbrotherathome. A．mayplay B．mustbeplaying C．canpl

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