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【单选题】
以下属于5～6岁末期幼儿具有健康体态的典型表现是（）A.
在提醒下能自然坐直、站直
B.
在提醒下能保持正确的站、坐和行走姿势
C.
经常保持正确的站、坐和行走姿势
D.
坚持保持正确的站、坐和行走姿势
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举一反三
【简答题】Since it is to ask for sick leave, he often uses it as an excuse for staying away from school.
【单选题】The old man __________ in Tibet for two years as a volunteer teacher；it is an experience he often mentions.
A.
served
B.
serves
C.
is serving
D.
has served
【单选题】-----Lin Tao’s spoken English is very good. ----- _______. He often talks with foreigners.
A.
So it is.
B.
So is it.
C.
So is he.
D.
So he is.
【简答题】酶的底物专一性(substratespecificity)(名词解释)
【简答题】底物专一性(substrate specificity)
【单选题】He often travels, but never takes the plane. He thinks it is ______ .
A.
comfortable
B.
dangerous
C.
effective
【简答题】阅读理解。 Mr. Turner likes fishing. It is his favorite sport. He often fishes for hours without catching anything. But this does not worry him. Some fishermen couldn't catch fish. Sometimes they catch old...
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