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【单选题】
关于肺泡的描述,哪一项错误A.
进行气体交换的场所
B.
Ⅱ型肺泡细胞参与构成气血屏障
C.
相邻肺泡间的结缔组织为肺泡隔
D.
肺泡隔富含弹性纤维
E.
由Ⅰ型肺泡细胞和Ⅱ型肺泡细胞组成
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【单选题】听力原文：M: Does John know the class is having a surprise party for Mm when he turns twenty-one this week? W: No, he thinks we are giving a retirement party for the dean. We'd hidden the presents we bough...
A.
A ball.
B.
A faculty reception.
C.
A class reunion.
D.
A birthday party.
【单选题】连线。 1. What's this? 2. How many markers do you have? 3. What's his name? 4. Where isLi Ming? 5. What's he doing?
A.
He's playing ping-pong.
B.
He is in the gym.
C.
Eight in all (总共).
D.
It's paper.
E.
His name is Li Ming.
【简答题】计算，选择得数。 ( ) 1. What's seen plus four? ( ) 2. What's nine plus twelve? ( ) 3. What's thir plus thirty-six? ( ) 4. What's forty-one plus four? ( ) 5. What's twenty-...
【简答题】矿井抽放瓦斯的方法按照抽放瓦斯来源分类有哪些?
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