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【单选题】
决定气体在肺部交换方向的关键因素是A.
呼吸膜的面积
B.
气体的分压差
C.
气体的分子量
D.
呼吸膜的通透性
E.
气体在血中的溶解度
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反馈参考答案：
举一反三
【简答题】概括这段话的大意。
【简答题】And so we've got to remind ourselves -- and we can do it -- to be curious; to be curious about what others bring. And that curiosity can also ______a kind of generosity of ______.
【单选题】What are the childrenrequired to do before going out of the building?A.Wait at a comer．###
A.
What are the childrenrequired to do before going out of the building? A.Wait at a comer．
B.
Givetheir names at a desk．
C.
Staytogether with their parents．
【单选题】Before going out, Linda_________ a quick look at herself in the mirror on the wall.
A.
will be taking
B.
was taking
C.
had taken
D.
took
【单选题】听力原文：MD: There's no doubt we've got to tighten up on financial control. Peter, you're in charge of credit control. What do you suggest? FC: Well, rye been looking at our payment terms, in other words ...
A.
tighten up on financial control
B.
losen financial control
C.
keep the situation
【简答题】A～G是初中常见的7种物质，它们有如下图所示的转化关系．已知A、C是无色液体，B、F、G是无色气体，其中大量排放F会引起温室效应，D是黑色固体，E在纯净的B中燃烧发出明亮的蓝紫色火焰． （1）请写出下列物质的化学符号：D ______ ，G ______ ． （2）请写出下列变化的文字表达式和基本反应类型： ①B→F ______________________________ ； ②C→B __...
【简答题】下面对本文内容的分析和概括。正确的一项是（ ）。
【单选题】What will you do if it__________ tomorrow? We have to carry it on; we've got everything ready.
A.
rain
B.
rains
C.
will rain
D.
is raining
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