高等学校英语应用能力
单选题Night-shift workers often find it difficult to sleep in the morning because _____.A their internal clock will not allow them toB they are often disturbed by morning visitsC they are not trying hard enough to do soD they are too tired to go to sleep wel
题目
单选题
Night-shift workers often find it difficult to sleep in the morning because _____.
A
their internal clock will not allow them to
B
they are often disturbed by morning visits
C
they are not trying hard enough to do so
D
they are too tired to go to sleep well
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