数字摄像机所拍摄的数字视频及其伴音的数据量很大，因此它与主机的连接接口多数采用( )

Li Ruyan, 13 and his classmates in Shanghai did something special last summer. They worked in groups with traffic police at different crossroads in the city. Holding small red flags, the students helped keep order and stopped people from jaywalking(乱穿马路).

As part of the school project. Li’s school has encouraged its students to do more community(社区)work.

After the half day of exhausting work Li told himself not to jaywalk anymore.

“I think through community work we get to help others and, more importantly, we grow a sense of responsibility(责任感),” he said.

Community service is an important part of education for teenagers around the world. In the US and Canada, high school students need to finish 40 hours of community service before graduation. For those Americans who have finished 1,400 hours of community work, they can be awarded nearly $ 5, 000(33, 000 yuan).

Chinese students today do more community work, too. For example, starting from 2010, Sichuan high school students have been asked to do 10 days of community work. It will become part of their school grade.

Qian Lijun, 16, and her classmates in Suzhou, Jiangsu went to a local elder care home this winter. They put Spring Festival couplets (对联) on the walls and cheered up the people living there.

Li Xiaotian, 15, of Anshan said he used to clear flyers (小广告) from telephone poles (电线杆) with his classmates. They brought tools, towels and buckets and worked for three hours under the summer sun. “It was tiring, but seeing the clean poles without ugly ads — we really felt proud,” he said.

小题1:What was the special thing Li Ruyan did last summer?

A．He joined a special group of Class13.

B．He become a policeman.

C．He helped the traffic police at a crossroad.

D．He stopped people from talking.小题2:From this passage we know that _______.

A．Li Ruyan’s school is in the middle of a big city.

B．Li Ruyan and his classmates do some community work every day.

C．Ruyan and his classmates often hold small flags when they cross the roads.

D．Ruyan and his classmates think it is good for them to do some community work.小题3:Community service _______.

A．has become a very important part of education only in China.

B．is very important in school education in some foreign countries.

C．is the only part of the school project for teenagers around the world.

D．needs students to finish at least 1,000 hours of community work.小题4:Which of the following is NOT true according to the passage?

A．The students in Shanghai helped people to keep the traffic rules.

B．The students in Suzhou visited the old people’s home.

C．The students in Anshan cleaned the walls under the summer sun.

D．The students in Sichuan sent Spring Festival couplets to the old people.小题5:Which of the following is NOT true according to the passage?

A．Community service helps students grow a sense of responsibility.

B．Through community work students get to help others and learn something.

C．Students are now encouraged to do more community work in many school in China.

D．Students will be awarded much money for doing more community work in Canada and the US.

根据图片，写出单词或者短语。

1.  e___________

2.  t___________ l___________

3.  p___________ o___________

4.  g___________ s___________

5.  t___________ l___________

6.  t___________ r___________

弯曲试冲时，冲件的弯曲角度不够，产生的原因有（）

A、凸、凹模的弯曲回弹角制造过大

B、凸、凹模之间的间隙过小

C、凸进入凹模的深度太浅

1998年4月3日，我国A进出口公司与英国B公司签订了一份纺织面料出口合同，合同金额为100万美元，约定的价格条件为CIF利物浦。B公司依约于1998年4月15日开出以A公司为受益人、金额100万美元的不可撤销信用证。A公司接到信用证后，随即与中国C运输公司签订了海上货物运输合同，并向D保险公司投保了海运一切险，而C公司亦依约定时间在天津港装船，将货物运往利物浦。船行途中，因遭遇风暴，船长命令将A公司交运的部分纺织面料投入海中，到岸交货时，B公司仅仅收到价值60万美元的纺织面料。那么，对于B公司遭受的损失：

A．应由A公司向C公司要求赔偿

B．应由B公司向C公司要求赔偿

C．应由A公司向D公司要求赔偿

D．应由B公司向D公司要求赔偿

阻燃剂按化学（）分类，可以划分为卤系、磷系、氮系和无机物。

A.分子

B.结构

C.作用

D.原理