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【单选题】
词汇与结构 It draws fluid from the reservoir and ________ it to the system through the filter and a check valve and the system pressure can be built up.A.
excels
B.
expels
C.
excludes
D.
impels
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反馈参考答案：
举一反三
【多选题】In this video, linking words and phrases are divided into three categories, and they are:
A.
conjunctions
B.
prepositions
C.
adverbs
D.
auxiliary
【简答题】生物大分子都是由构件分子通过一定的共价键连接而成的,蛋白质的构件分子是__________,核酸的构件分子是____________,多糖的构件分子是_______________。
【单选题】患儿女，1周，因呕吐、腹泻轻度脱水，在实际补液中，对患儿腹泻丢失体液引起脱水的补液量总计为
A.
30～50ml/kg
B.
50～70ml/kg
C.
50～100ml/kg
D.
90～120ml/kg
E.
120～150ml/kg
【单选题】In general, words can be divided into two groups, they are ______ words.
A.
receptive; productive
B.
notional; function
C.
active; passive
D.
single-morpheme; compound
【单选题】Which of these words is nearest in meaning to the words "are divided" in Paragraph 2?
A.
disagree
B.
separate
C.
arrange
D.
concern
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