加油站月盘点时间由（）在系统中统一控制。A.县区公司 B.市公司 C.省公司 D.总

阅读理解

     For many people in the US, sports are not just for fun. They're almost a "religion". Thousands of

sports fans buy expensive tickets to watch their favorite teams and athletes play in person. Other fans

watch the games at home, sticking to their TV sets, never missing a game. Many a wife becomes a

"sports widow" during her husband's favorite season. Americans' devotion to sports has created a new

class of wealthy people: professional athletes. Sports stars often receive milliondollar salaries. Some

even make big money by appearing in advertisements for soft drinks, shoes and almost everything.

     Sports are an important part of American culture. Throughout their school life, Americans learn to

play many sports. Many students try out for the school teams. Athletic events at universities attract

scores of fans and benefit the whole community. Many people also enjoy noncompetitive activities, like

hiking, cycling, horseback riding, camping or hunting.

     Many sports were imported from other countries. Europeans brought tennis, golf, bowling and

boxing to America. Football and baseball came from other Old World games. Only basketball has a

truly American origin. Americans export sports fever as well. Satellites broadcast games to sports fans

around the globe. NBA is a good example. The names of American superstars like basketball great

Michael Jordan have become household words all over the world.

1. Many a wife becomes a "sports widow" in the US probably because________.

A. they are serious in religion

B. they are devoted to sports

C. their husbands stick to sports

D. their husbands are missing

2. Which of the following is NOT true according to the passage?

A. The US sports stars can earn a large sum of money via the media.

B. American students go in for various sports and athletic events.

C. Lots of American people take part in noncompetitive activities.

D. American people like to exchange different sports from each other.

3. We can infer from the passage that________.

A. all the Americans are sports fans

B. sports culture influences the world

C. most Americans like competition

D. America has invented many sports

4. The writer mainly intends to tell us________.

A. how important sports are in America

B. where sports can help to make money

C. why sports are so popular in America

D. what affect Americans' everyday life

换热器安装防冲板的作用有（）。

A.保护壳体

B.保护管束

C.降低流速

D.避免震动

经过茎乳孔的神经是（）

A.面神经

B.前庭蜗神经

C.上颌神经

D.下颌神经

E.三叉神经

请根据下面化合物的结构分析回答：

该化合物可以用双缩脲试剂鉴定，请写出双缩脲试剂的使用方法（）