单选题
______sleep is crucial to the health of adults, new research suggests that lack of sleep may affect teens' health, too.
A、
Just as
B、
As long as
C、
Despite that
D、
No matter how
【正确答案】
A
【答案解析】
[解析] 根据句意“睡眠就像对成年人来说很重要一样”可知，本题只有A项just as“正 如，和……一样”符合题意。因此本题选A。
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