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【单选题】
下列哪种液体中分泌型IgA的含量最高A.
肠道分泌液
B.
支气管粘液
C.
唾液
D.
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反馈参考答案：
举一反三
【单选题】"I didn't quite catch that." indicates ....
A.
The object was falling off my hands.
B.
The capture was running away.
C.
I missed the bus.
D.
I didn't see the point.
【单选题】--Beg your pardon, please.I didn't quite catch what you said.---Oh, I ___ to myself.
A.
had talked
B.
talking
C.
talked
D.
was talking
【单选题】有关支气管哮喘的描述中,哪项是错误的:
A.
属I型超敏反应性疾病
B.
有多种炎细胞和炎症介质参与
C.
主要效应细胞是肥大细胞和嗜酸性粒细胞
D.
哮喘发生的主要原因是支气管平滑肌痉挛
E.
支气管壁主要病理变化是黏膜水肿,黏液分泌亢进,有多量嗜碱性粒细胞浸润
【单选题】一静止的均匀细棒,长为L,质量为M,可绕通过棒的端点且垂直于棒长的光滑轴O在水平面内转动.一质量为m,速率为v的子弹在水平面内恰与棒垂直的方向射入棒的自由端.设击穿棒后子弹的速度减为v/2,则此棒的角速度为
A.
mv/(ML)
B.
3mv/(2ML)
C.
5mv/(3ML)
D.
7mv/(4ML)
【单选题】_____, his suggestion is not useful, though it sounds very interesting. [ ]
A.
Generally speaking
B.
To be honest
【单选题】听力原文：You know what he means, Mary? (A) He's so selfish. (B) Sorry, I didn't quite catch that. (C) Are you kidding? (14)
A.
B.
C.
【单选题】Though it sounds a bit too dear ( 昂贵 ), it is worth ______. A. being bought B. buying C. to buy D. buying it
A.
being bought
B.
buying
C.
to buy
D.
buying it
【单选题】—Beg your pardon, please. I didn't quite catch what you said. —Oh, I just______to myself.
A.
talked
B.
am talking
C.
was talking
D.
had teen talked
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