题目内容

微积分的研究对象是( )

A. 函数
B. 极限
C. 积分
D. 微分

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微积分的创始人是( )

A. 牛顿
B. 莱布尼兹
C. 牛顿和莱布尼兹
D. 以上都对

[音频]Listen and complete the following conversation.(A guest is making a complaint to the headwaiter in a restaurant.)G=GuestH=HeadwaiterG: Excuse me, are you the headwaiter? I want to (1).H: Yes, sir. What can I do for you?G: (2), but my friend and I have been waiting 20 minutes for our drinks.H: I'm very sorry, sir. Our staff are very busy this evening. (3)?G: One Gin and one Sherry.H: Don't worry. I will attend to it at once.

肝门静脉不收纳哪个器官的血液( )

A. 胆囊
B. 肝
C. 胃
D. 脾

下列关于门静脉的描述,正确的是( )

A. 从肝门出肝
B. 静脉瓣丰富
C. 收集腹腔不成对器官(肝除外)的血液
D. 通常由肝静脉和脾静脉合成

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