初级生产（Primary Production）

The Xin’an Street Community(社区)began three programs not long ago.

The Neighborhood Clean-up Program

Every Sunday at 5:00pm, the neighbors begin cleaning Xin’an Street from one end to the other. The head of the Community, Zhao Fuqin, said, “The first Sunday, only eleven people came, but we picked up over seven big bags of rubbish (垃圾)from the sidewalk and street. The next weekend, twenty people came, and filled eight rubbish bags. Now the neighborhood really looks great!”

The Neighborhood Watch Program

The neighbors on Xin’an Street began this program to look for problems in the neighborhood and to call the police if necessary. The neighbors all say the watch has already helped.

SunYan, aged 60, a retired teacher, said, “In the past, I felt afraid at night. Now I know my neighbors are watching for trouble. ” According to the police, there are fewer problems on Xin’an Street. “Calls to 110 went down last month. Criminals knew that the people on Xin’an Street were watching, so they stayed away,” said a policeman.

The Neighborhood Fitness Program

A Health Club was built last month, where the neighbors can do different kinds of sports like basketball, ping-pong ball, tennis, etc. “Every morning you can see groups of neighbors running, dancing and playing Taijiquan. We have come to realize the importance of taking exercise,” said Chen Jinliang, a businessman of 45.

The community has more plans. “We plan to start the Kids Care Program for children. We are going to build an after-school club. And we want to have a picnic for everyone in the neighborhood!” said Zhao Fuqin.

小题1:When do the neighbors of the Clean-up Program clean Xin’an Street?

A．Every Saturday morning.

B．Every Saturday afternoon.

C．Every Sunday morning.

D．Every Sunday afternoon.小题2:Who is Zhao Fuqin?

A．A retired teacher.

B．The head of Xin’an Street Community.

C．A businessman.

D．A policeman.小题3:What does the underlined word “criminals” mean?

A．罪犯.

B．乞丐.

C．强盗.

D．邻居.小题4:The community started _______ to help people keep healthy.

A．the Clean-up Program

B．the Watch Program

C．the Fitness Program

D．the Kids Care Program小题5:From the passage we know that _______ in the Xin’an Street Community.

A．there are no problems now

B．an after-school club was built last month

C．the neighbors have a picnic every Sunday

D．the environment is getting nicer and cleaner now

（2011•成都）如图，在△ABC中，D，E分别是边AC、BC的中点，若DE=4，则AB=　

已知乙烯能发生以下转化：

（1）（1分）乙烯的结构简式为　　　　         ；

（2）（2分）写出B、D化合物中官能团的名称：B中含官能团          ；D中含官能团        ；

（3）（6分）写出反应的化学方程式并判断反应类型。

①（3分）                                         ，反应类型               ；

②（3分）                                         ，反应类型               。

（7分）实验室用氢氧化钠固体配制1.00mol/L的NaOH溶液500mL，回答下列问题：

（1）实验步骤为：    、称量、溶解（冷却）、     、     、定容、摇匀、装瓶

（2）必须用到的仪器为（选择以下编号）：                    

①托盘天平、②量筒、③烧杯、④试管、⑤玻璃棒、⑥500ml容量瓶、⑦胶头滴管

（3）下列操作对所配溶液的浓度有何影响？（填偏高、偏低、无影响）

①在未降至室温时，立即将溶液转移至容量瓶定容：              

②读数时俯视读数：                   

钻机正式工作前应当进行试运转，试运转时间一般为（）。

A．50min

B．40min

C．5～10min

D．30min