抗原抗体反应中，抗体过剩时的沉淀反应称为（）。A．前带 B．后带 C．带现象 D．等

阅读理解

     Many people like to travel during their vacations. Some people travel in tour groups because they think it is safe

and cheap. A tour guide takes care of the group and makes sure the group can see a lot of interesting and beautiful

sights.

     Other people like traveling alone or with friends. If you travel by yourself, you are free to see what you want to see.

     People travel for many reasons. Some people travel to learn more about other countries' people, culture, food and

languages. Some people travel for adventure(冒险). They want to do some different things, such as skiing, bungee

jumping and mountain climbing. Other people like to shop when they travel. They look for new things or cheap ones.

     There are different ways to travel. Some people take trains, boats or buses, some fly and others drive cars. Some

people like to travel slowly and spend a long time in each place, while others like to take quick tours and visit more

places in a short time.

1. The word "sights" in the first paragraph means "_____" in Chinese.

A. 视力

B. 看见

C. 风景

D. 情景

2. Why do some people like traveling alone?

A. Because they want to see interesting sights.

B. Because they have different ways to travel.

C. Because they are free to see what they want to see.

D. Because they want to learn more about people from other countries.

3. According to the passage, people travel for _____.

A. adventure

B. learning more about another country

C. shopping

D. all of the above

4. Some people take quick tours because _____.

A. they travel by car

B. they like to visit many places in a short time

C. they have much time for traveling

D. they want to spend a long time in each place

5. If a person travels for adventure, he may choose _____ to get a different experience.

A. eating

B. shopping

C. bungee jumping

D. sleeping

女患者，38岁，带下量多，色白质粘，倦怠乏力，纳少便溏，舌淡，苔薄白，脉缓。

中医辨证为（）

A.热毒

B.脾虚

C.肾阳虚

D.湿热

E.肝经湿热

有人说首长负责制是否定民主集中制，你怎么看

关于TT系统和IT系统的适用范围，正确的是（）。

A.TT系统适用于无变电所而适用TN-S系统的民用建筑

B.TT系统适用于无等电位联结的户外场所

C.TT系统适用于应急电源系统和矿井下电气装置

D.IT系统适用于应急电源系统和矿井下电气装置

某建设项目的现金流量为常规现金流量，在基准折现率为5%时，净现值为100万元，当基准折现率为8%时，该项目的NPV( )。

A．大于100万元

B．小于100万元

C．等于100万元

D．以上情况都可能出现