深拷贝和浅拷贝的区别？

读世界年平均气温分布图．

（1）在图中北半球分别找20℃、10℃、0℃、-10℃等温线，可以发现世界气温的分布规律______．

（2）从图中可以看出：世界最炎热的大陆是______洲大陆；世界最寒冷的大陆是______洲大陆．

（3）图中B地的气温比周围同纬度地区低10℃以上，这主要是因为该地______．

（4）图中①、②两点都在北回归线上，可以看出点①气温______于②气温，这主要是因为______因素影响气温不同．

（5）我们学校年平均气温为______，当我们考试节期间，图中B地处于______季节．

“大将筹边尚未还，湖湘子弟满天山。新栽杨柳三千里，引得春风度玉关。”此诗反映的是 [ ]

A、林则徐充军伊犁后开发新疆的业绩

B、林则徐领导虎门销烟的事迹

C、洪秀全领导金田起义的情形

D、左宗棠率领湖南战士收复新疆、治理边疆的伟大业绩

下列属于社会工作特点的有( )

A．多方协同

B．注重专业价值

C．注重理论指导

D．强调专业方法

E．双方合作

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.

The motive to help those less fortunate comes from the poor 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.

小题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.小题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.小题3:The underlined word “destitute” in Paragraph 4 probably means           .

A．lifeless

B． penniless

C．useless

D．valueless小题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小题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

评价烃源岩等级标准的2项主要参数为（）和（）。