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问题 单项选择题

男性，32岁，今日中午突然呕血150ml，继而排黑便2次，共约400ml。查体：剑突下轻压痛，肝脾未触及。上消化道出血的原因可能为（）

A.应激性溃疡

B.消化性溃疡

C.胃癌

D.慢性胃炎

E.食管静脉曲张破裂

答案

参考答案：B

补全对话，情景问答

完成对话。

A: (1)                                                                                                                           ?

B: Go down this street, take the third crossing on the left, Then go straight ahead. Go past the supermarkt. 

    Walk about three blocks. You will see the post office is between the bank of China and the bookstore.

A: (2)                                                                                                                           ?

B: It's about fifeen minuts' walk. It's late now. you'd better take a bus.

A: (3)                                                                                                                            ?

B: No. 49 bus.

A: (4)                                                                                                                            ?

B: It will take you about five minutes to get there.

A: Thanks a lot.

B: (5)                                                                                                                             .

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填空题

水渣冲制作业的三要素为渣水比、冲制压力和（）。
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