皮皮学，免费搜题
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【单选题】
男性,43岁。溃疡病史5年,突发呕血2小时入院。患者出现冷汗,脉搏细数、呼吸浅促,血压下降至80/40mmHg。估计出血量为:A.
400~500ml
B.
500~600ml
C.
600~700ml
D.
700~800m
E.
大于800ml
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皮皮学刷刷变学霸
举一反三
【单选题】—Do you know _____? —Yes, I do, she came here on foot. [ ]
A.
where Lucy came from
B.
how Lucy came here
C.
where did Lucy come from
D.
how did Lucy come here
【单选题】— Do you remember ____________ he came? — Yes, I do, he came by car.
A.
how
B.
when
C.
that
D.
if
【单选题】CFC破坏臭氧关键的一步是：
A.
CFC 在同温层中分解并释放出氯
B.
CFC 在同温层中分解并释放出碳
C.
太阳辐射将臭氧分解
D.
CFC 直接与同温层中的臭氧结合
E.
工业生产过程中的碳与臭氧发生反应
【单选题】--Do you remember ____ he came? --Yes, I do.He came by car.
A.
when
B.
if
C.
how
D.
that
【单选题】—Do you know _____ move into our new house? —We will move there as soon as the key ____ to us. [ ]
A.
when we can; is given
B.
when can we; will be given
C.
if we can; is given
D.
when we can; will be given
【单选题】How do water molecules move as surface waves propagate?
A.
They move in circles
B.
They move up and down
C.
They are carried by the wave
D.
They do not move
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