简述胰液的成分和它们的生理作用？

糖尿病人尿量增多的原因是

A．肾小球滤过率增加

B．渗透性利尿

C．水利尿

D．抗利尿激素分泌减少

E．醛固酮分泌减少

软件测试可分为白盒测试和黑盒测试。基本路径测试属于（）测试。

阅读理解。

     It's not uncommon in America for a person to belong to some kind of volunteer group. Donating

one's time and services is very much a part of the American way of life. Most charitable activities are

organized by churches and groups around the nation and even encouraged by the government. The

helping hand is extended to the poor, the homeless and the disabled. Some people work to teach

youngsters how to read. others open up soup kitchens to feed the homeless. Volunteers also take care

of the disabled by making reading tapes for the blind and working in orphanages (孤儿院) to help

children without parents.

     High school students are often encouraged to become volunteers and many school club activities

center around volunteer services. Students may work with disabled children during a summer program,

or participate in a club activity which helps to bring meal to senior citizens who are shut-ins. With their

sense of idealism (理想主义) students are often eager to donate their spare time. They see such

activities as a way of becoming involved in the community and the adult-world. Social action for them

becomes as important as their academic studies.

     In a like manner, throughout the year, fund raising drives are also conducted by schools and

community groups to raise money for a worthy cause. They may respond to a recent earthquake in a

foreign country, a flood somewhere within their own, or another natural disaster which has left people

destitute and homeless. They may organize drives to collect food, clothing and medicines to serve an

immediate need. Today even the Halloween custom of 'trick or treat' has become an occasion to collect

money for a charitable cause.

     This call to help those less fortunate than themselves arises from the humble origins of the American

nation. Those immigrants who were poor and downtrodden (受压迫的) became dependent on the

kindness of their neighbors to make a new life for themselves.

     American volunteers work throughout the world in less developed countries. They volunteer by

serving as a champion of goodwill both at home and abroad, which no doubt enriches both his life and

those whom he serves.

1. Which of the following charitable activities is not mentioned in the passage?

A. Some people open up soup kitchens to feed homeless people.

B. Some students bring meals to old people who can't go out easily.

C. Some people collect money to help a foreign country with a recent earthquake.

D. Some students donate books to children in mountainous areas.

2. Why are American high school students eager to do voluntary work?

A. Because they want to participate in some social activities.

B. Because they want to go to better universities.

C. Because they can get higher scores at school.

D. Because they can realize their dream sooner.

3.The underlined word "destitute" in Paragraph 4 probably means           .

A. lifeless

B. penniless

C. useless

D. valueless

4. American charitable activities started because           .

A. Americans are always ready to share with others

B. Americans are mostly kind

C. poor immigrants needed help badly

D. poor Americans couldn't live on without help

5.What's the best title of the passage?

A. The Call from the Poor

B. Voluntary Work in the US

C. Ways to help the Poor

D. American Volunteers Around the World

人工自动免疫进入人体的物质是（）。

握拳试验用于检查：（）

A.尺侧腕屈肌损伤

B.尺侧副韧带损伤

C.桡骨茎突狭窄性腱鞘炎

D.三角软骨盘损伤

E.伸指肌腱囊肿