题目内容

自然数多还是正整数多?

A. 一样多
B. 自然数多
C. 正整数多
D. 不确定

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下面哪些行业用到了微积分( )

A.航海业
B. 造船业
C. 机械制造业
D. 以上都对

微积分的研究对象是( )

A. 函数
B. 极限
C. 积分
D. 微分

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.