下面语句会产生编译错误的是______。A．float F=1024.OF； B．d

下列有关抗可提取核抗原抗体的临床意义中，错误的是：

A．抗Sm抗体是SLE特异性抗体，并与病情活动性相关

B．抗SSA、抗SSB抗体在干燥综合征中有较高阳性率

C．抗jo抗体出现在多发性肌炎、皮肌炎及合成酶综合征

D．高滴度u1RNP抗体阳性常出现于混合结缔组织病

E．抗ScL-70抗体是硬皮病的特异性抗体

I first had physics lessons when I was in Grade Eight some years ago. In class, I   1   that there wasn’t a Nobel (诺贝尔) Prize winner from China. That made me sad, and I decided to change (改变) it.   2   after that, I got up early in the morning. I turned on the light and took out a physics book. Then I started   3   quietly. I worked so hard because I had a great   4   — one day, I would be the first   5   person to win the Nobel Prize in physics. Later on, I found physics at school too easy for me. I wanted to learn   6  , so I made a reading plan and started to find answers to more difficult problems.

Now I am a top student in physics. I won the first prize in the national physics competition  last month. And I am happy to be closer to my dream after a few   7   hard work. Of course,   8   I have some problems. My classmates always   9   me when they are talking about fashion (时尚) or pop stars, because I know   10   about them. “Well, that doesn’t matter too much,” I tell myself. “They don’t know much about physics , but I won’t laugh at them.”

小题1:A. joined           B. heard                 C. studied

小题2:A. So              B. But                    C. And

小题3:A. writing         B. reading                C. thinking

小题4:A. dream          B. idea                 C. plan

小题5:A. Chinese        B. Canada                C. American

小题6:A. much           B. more                  C. most

小题7:A. weeks’         B. months’              C. years’

小题8:A. usually         B. always                C. sometimes

小题9:A. depend on      B. look at                C. laugh at

小题10:A. anything        B. nothing              C. everything

单词拼写。

      根据下列句子首字母或所给汉语注释，在句子右边的横线上写出空缺处各单词的正确形式。

(每空只写一词)

1. Well-spent aid is not _____(简单) throwing money at the poor.

2. This is a _____ (典型) example of temporary employment these days.

3. Her _____ (提拔) to Sales Manager took everyone by surprise.

4. Many foreigners who have never been to New York _____ (联系) the city with the Statue of Liberty.

5. A research has provided evidence to support a theory that our brains have begun to _____ (缩小).

6. What makes it surprising is that their r_____ to the defeat is to have another go.

7. The fruit is starting to go r______.

8. Don't profit yourself at the e _____of others.

9. Developed countries b_____ much of the responsibility for environmental problems.

10. The clock has just s_____ three.

北京公交票价由2元变为1元，主要有利于：

A．缓解交通压力，减少交通拥堵

B．扩大居民出行，方便居民外出旅游

C．降低城市中心人口密度

D．便于合理规划，加强城市管理。

计算题：求图示台阶面层工程量，L＝1m。（1）水磨石面层。（2）大理石面层