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【单选题】
根据《建筑基坑支护技术规程》(JGJ120-2012),基坑侧壁的安全等级分为( )级。A.
一
B.
二
C.
三
D.
四
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举一反三
【单选题】Jenny, you often get ill, so you should _______ your health.
A.
look for
B.
look up
C.
look at
D.
care for
【单选题】If you don’t want your parents to worry about you, you should learn to____ yourself
A.
look for
B.
look after
C.
look up
D.
look down
【简答题】You should _________ your subject before you began to do your homework. A look at B. look through C look after D. look in
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