以太阳为参照点，地球自转一周所需时间为[ ] A．23小时56分 B．24小时零

看图，请为下列单词找回丢失的字母。

1.    2.    3.    4.    5.

cl    ssr         m       l    bra    y                 ru    k                        ar                   b    c    cle

阅读理解。

     Every year thousands of young people in England finish school and then take a year off before they

start work or go to university. Some young people go to other countries and work as volunteers

(志愿者). Volunteers give their time to help people. For example, they work in schools or hospitals, or

they do something helpful for the environment.

     Pauline Jones, 18, lives in Cardiff, Wales. Next year she is going to university to study Chinese, but

now she's living in Belize. Pauline says, "I'm working with other people here to save the coral reefs

(珊瑚礁) in the sea near Belize. The reefs here are beautiful, but if the sea water is very polluted, the

coral will die. I'm helping to do research on the coral and the fish that live around the reefs. All over the

world, coral reefs are dying. We need to do something about the problem before it's too late."

     "I'm staying with a family here and I help do some housework. I don't get any money, but that's OK.

I love my work here, and I'm learning a lot about the people of Belize-and myself! After I finish my work,

I want to stay here for another three months. I want to travel around Belize and Central America."

1. Some young people from England _____ after they finish school.

A. go to university abroad    

B. spend one year abroad as volunteers

C. go to work for money    

D. start work in schools or hospitals

2. Pauline Jones, an eighteen-year-old girl, is living in _____ now.

A. England        

B. China            

C. Belize            

D. Cardiff

3. Pauline Jones is _____ with other people.

A. studying Chinese in a university      

B. working to save the coral reefs

C. helping do some housework          

D. doing some research in Wales

4. From the passage, we know that the coral reefs _____.

A. will die because of the pollution    

B. are not as beautiful as before

C. cannot live without fish in the sea    

D. will probably be sold for money

5. Pauline Jones wants to _____ after she finishes her work as a volunteer.

A. stay there for another year    

B. go back home to start work

C. learn about the people home    

D. travel around Central America

某同学在家里测定小球做直线运动的速度．他进行了如下实验：

A．将带槽的长木板一端放在水平面上，另一端抬高，组成一个倾角固定的斜轨（斜轨末端有一小段圆弧平滑过渡到水平面）．如下图所示；

B．水平面上的a、b、c、d是地面上每隔60cm的地砖接缝，a端正好是斜轨末端；

C．将小球从斜轨的O点由静止释放，小球通过水平面上的a、b、c、d后向远处运动；

D．用电子手表的计时功能测量小球从a运动到d的时间t₁；

E．仍将小球从斜轨的O点由静止释放，测量小球从a运动到c的时间t₂；

F．仍将小球从斜轨的O点由静止释放，测量小球从a运动到b的时间t₃；

G．计算小球在ad间、ac间和ab间的平均速度．

（1）有关数据记录在下表中，请将未填写的数据填在答卷上（保留二位有效数字）．

距离（cm）	时间（s）	平均速度（m/s）
a、d间的距离：180	2.10
a、c间的距离：120	1.30
a、b间的距离：60	0.60

根据计算回答下列问题：

（2）小球在水平面上做______运动（填“加速”“匀速”或“减速”）

（3）小球在a点的瞬时速度______（填“大于”“等于”或“小于”）a、b间的平均速度．

患者，男，40岁，渔民，居于血吸虫流行区，常有饮生水不良习惯，持续高热3周，体温在38.3～39.4℃之间，食欲减退，伴腹胀，有黏液性稀便，每日2～3次，查体：T39.2℃，BP128／87mmHg，P125次／min，肝肋下2cm，脾1cm，化验：WBC3×10⁹／L，中性55%，淋巴细胞45%，嗜酸性粒细胞计数为零。

经手术及积极抗感染等对症处理后体温逐渐下降，此时仍有可能出现肠道严重并发症是因为（）

A.食欲开始好转，饮食活动未予适当限制

B.抗生素停用过早，细菌再度繁殖

C.肠道病变溃疡尚未完全愈合

D.久病体弱，抗体形成不足

E.可能与用药有关

总平面设计是指总图运输设计和总平面配置，在总平面设计中影响工程造价的主要因素包括 ( )。

A．占地面积、功能分区、运输方式

B．占地面积、功能分区、工艺流程

C．占地面积、运输方式、工艺流程

D．运输方式、功能分区、工艺流程