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【判断题】
由于储存的 7- 脱氢胆固醇在阳光照射下,可转变成维生素 D ,故认为缺少维生素 D 时要适当多晒太阳。A.
正确
B.
错误
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举一反三
【简答题】目前，山西省高速公路已运营通车的现有几条高速公路？名称分别是什么？
【单选题】I think it's important for children _____ eight hours a night. [ ]
A.
sleep
B.
sleeps
C.
to sleep
D.
sleeping
【单选题】Everyone needs at least eight _________ sleep a night. ——I agree.
A.
hour
B.
hours
C.
hour’s
D.
hours’
【单选题】Everyone ______ to have at least eight ______ sleep at night. [ ]
A.
needs, hour's
B.
need, hours'
C.
needed, hour's
D.
needs, hours'
【简答题】选词填空。 give, get, need, believe, stay 1. I ________ it’s important to sleep eight hours a night. 2. A docto r can ________ you midicine. 3. Don’t ________ stressed out. It’s not healthy. 4. I have a to...
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