设则R→0时，下面说法正确的是（）。 A．IR是R的一阶无穷小 B．IR是R的二阶无

IEP是（）的缩写。

选用所给句子完成对话。

A: Thank you for your coming first. 1            ?

B: I'm fourteen.

A: You're so young, but you're very helpful. 2            .

B: On the eleventh of May.

A: 3             ?

B: When the man was crossing the street, a car hit him and I was just there.

A: 4             ?

B: Of course not.

A: 5             ?

B: I called the police and the police car arrived quickly. We sent the man to

    hospital at once. He was saved at last.

A: You're brave enough. We'll reward you.

A. Were you afraid?

B. What did you see?

C. How old are you?

D. When did you see the accident?

E. What did you do then?

伊斯兰教穆斯林敬茶端饭都用右手，不用左手与人握手寒喧。

程序法

卸油前从油罐车底部提取油样（地罐交接卸油除外），发现油样有（）等异常现象时拒绝接卸，并向主管部门汇报。

A.水杂

B.油杂

C.浑浊

D.气味异常