CRH1牵引变流器的工作原理是什么？

2008年9月16日，国家质检总局在伊利、蒙牛、三鹿、雅士利等22个婴幼儿奶粉厂家生产的产2品中检出三聚氰胺（C₃N₆H₆），长期摄入三聚氰胺会造成生殖、泌尿系统的损害，膀胱、肾部结石，并可进一步诱发膀胱癌．三聚氰胺由______种元素组成，C、N、H三种原子的个数比为______．

提出套利定价理论的是（）。

A．马柯威茨

B．夏普

C．罗斯

D．罗尔

Have you ever considered all the English expressions that include words about clothes? Let’s have a look．

People wear pants to cover the lower part of their bodies．We sometimes say that people who are nervous have ants in their pants．Sometimes，people may get caught with their pants down．They are found doing something they should not be doing．And，in every family，one person takes contro1．Sometimes a wife tells her husband what to do．Then we say she wears the pants in the family.

Pants usually have pockets to hold things．Money that is likely to be spent quickly can bum a hole in your pocket．Sometimes you need a belt to hold up your pants．If you have less money than usual，you may have to tighten your belt.

I always praise people who can save their money and not spend too much. l really take my hat off to them. Yet, when it comes to my own money, I spend it at the drop of a hat, which means I immediately spend it.

Boots are a heavy or strong kind of shoes. People who are too big for their boots think they are more important than they really are. I dislike such people.

My father is an important person. He runs a big company. He wears a suit and tie, and a shirt with sleeves that cover his arms. Some people who do not know him will think he is too serious and never shows his feelings openly. But I know that my father wears his heart on his sleeve.

小题1:What is this passage mainly about?  

A．What pants mean in English.

B．Some special English expressions.

C．Some funny English expressions.

D．Some expressions related to clothes.小题2:Which of the following expressions can show someone is nervous?

A．Get caught with one's pants down.

B．Have ants in one's pants.

C．Wear the pants in the family.

D．Bum a hole in one's pocket.小题3:If we say someone has to tighten his belt, we probably mean he        

A．has done something wrong

B．used to live a rich life

C．has put on the wrong pants

D．doesn’t have enough money小题4:Someone who spends his money at the drop of a hat most probably_           

A．doesn’t save money

B．earns much money

C．never wastes his money

D．spends more than he earns

高等学校实施全面发展教育的最基本的途径是（）。

A、教学

B、发展素质

C、科研训练

D、生产劳动

有关货物溢短单的签发，下列（）是错误的。

A.勿需船方确认

B.需收货人与大副共同签认

C.溢短数字有争议，大副应在批注后再签字

D.以上均错