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【判断题】
Do you prefer a smoking or non-smoking room?你想要个被子还是枕头?A.
正确
B.
错误
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举一反三
【单选题】Nitrous oxide comes from car exhausts and from chemical fertilizers. ( )
A.
gas which is produced by cars
B.
oil used for driving
C.
waste oil discarded
D.
devices that burn oil
【简答题】1/2英寸、3/4英寸管子的公称直径分别为（）mm和（）mm。
【简答题】根据句意及首字母提示完成单词。 1. This is my mother's s ______ . She is my aunt. 2. My father's brother is my u ______ . 3. My father's mother is my g ______ . 4. Meimei is my good f ______ , but we aren't in the sa...
【单选题】The chemical cargo has the characteristic of _____ to be paid sharp attentions during sea transportation.
A.
flammability
B.
toxicity
C.
corrosivity
D.
all of the above
【简答题】A. I 've got two sisters. B. My aunt has got a son. C. My father's a teacher. D. I'm nine years old. E. They're boyfriend and girlfriend. F. She's got blonde hair.
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