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【简答题】
计算下面各题，怎样简便就怎样算。 6/13+7/9+7/13 11/15+（1/12+4/15） 8/9+3/8-8/9 8/21+7/9+13/21+2/9 3-2/5-0.6 37/20-(2/7+17/20)
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举一反三
【单选题】( ) 5. — Did you see a man in black pass by just now? — No, sir. I _______ my car. C.was washing
A.
wash
B.
washed
C.
was washing
【单选题】This washing machine is______ to the other washing machines on the market.
A.
super
B.
advantageous
C.
superior
D.
beneficial
【单选题】She has to help her mother ______. [ ]
A.
doing washing
B.
washing
C.
for the washing
D.
with the washing
【单选题】Many people still prefer washing dishes by hand to machine washing because ______.
A.
hand-washed dishes are cleaner
B.
dishwashers are not so easily handled
C.
some dishes cannot be machine-washed
D.
washing dishes by hand is cheaper
【简答题】Who will __________to do the washing up?
【单选题】按规范规定,________。1舷墙和栏杆的高度应不小于1000mm;2甲板上设计成装运木材时,其高度至少应为1000mm;3栏杆的最低一根横杆距甲板应不超过230mm;4栏杆的其他横杆的间距应不超过380mm。
A.
①②④
B.
①③④
C.
②③④
D.
①②③④
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