题目内容:
Oneofthesleepproblemsiswakinginthemiddleofthenightandunableto__________. A.fallasleepagain
B.becomemoreenergeticthefollowingday
C.sleeplessthan7hours
D.confirmthoseseriousconsequences
E.suffersleepproblems
F.sleepmorethan8hours
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答案解析: