下列属于绿化周检时的检查对象是（）。A.绿篱 B.园林机械 C.农药 D.草地 E.

阅读理解。

     Our class is going to volunteer to serve (服务) the old people's home. Here is the plan.      

8:00 - 9:00    Clean, mend (修理) chairs and tables

9:00 - 9:30    Dance, sing and chat

9:30 - 10:30   Plant trees and flowers

10:30 -11:30   Make dumplings

13:00             Return home    

Leave: 7:00 a.m.

Meeting place: School gate

Transportation: By bus

                                                                                                        Class 6, Grade 3 

                                                                                                        October 12, 2010

1. Class 6, Grade 3 will go to _____.

    A. have a picnic

    B. help some old people

    C. visit some famous old men

    D. have a special class at school

2. The class will stay at the old people's home for _____.

    A. three hours

    B. four hours

    C. five hours

    D. six hours

3. What will they do at 11:00 a.m.?

    A. Plant trees and flowers.

    B. Chat with residents.

    C. Make dumplings.

    D. Have lunch.

4. How long will it take them to get to the old people's home?

    A. About an hour.

    B. About two hours.

    C. About one and a half hours.

    D. About three hours.

5. Which of the following is NOT true, according to the notice?

    A. They will take a train to the old people's home.

    B. They will dance and sing there.

    C. They will leave the old people's home at 1:00 p.m.

    D. They will help clean the old people's home.

男，60岁，因胃癌广泛转移而死亡。尸体解剖检查，心脏重200g。切片检查心肌细胞核两侧可见黄褐色细颗粒状色素。此色素可能是（）。

A.黑色素

B.胆色素

C.含铁血黄素

D.脂褐素

E.前角蛋白聚集

自然界存在着四种基本相互作用，万有引力、电磁力、强相互作用和弱相互作用．它们是不需要物体相互接触就能起作用的．下列选项正确的是（　　）

A．弹力和摩擦力是接触力，因此不属于四种基本相互作用

B．弹力和摩擦力虽然是接触力，但它们在本质上都是由电磁力引起的

C．强相互作用的作用范围很小，因此弹力等接触力属于强相互作用

D．弱相互作用就是作用力很小的力

固定矫治器治疗中的牙釉质脱矿发病率达（）

A.10％

B.20％

C.30％

D.50％

E.90％

学生有下列哪些行为，将会受到严重警告直至开除学籍（）

A.违反《中华人名共和国游行示威法》

B.在公共设施上乱涂乱写

C.侮辱谩骂恐吓他人

D.张贴反动传单