问题 单项选择题

正确修正定向系统的二次辐射误差的方法是()。

A.改变天线的横向安装位置

B.改进飞机材料,使其不产生二次辐射

C.用罗差补偿

D.改变天线的纵向安装位置

答案

参考答案:C

阅读理解

阅读理解。

     Tom was from Canada and he had come to New York for a holiday. One day he was not feeling well,

so he asked a man of his hotel to find a doctor. The man said, "Thomas Brown is a good doctor." Tom said,

"Thank you very much. Is he expensive?" "Well" the man answered, "he always asks his patients (病人) for

two dollars if they are first visit. One dollar if they are later visit." Tom decided to save one dollar, so when

he went to see the doctor, he said, "I've come again, doctor." For a few minutes the doctor looked at his

face carefully without saying anything. Then he said, "Everything's going as it should do. Oh, I gave you

medicine last time, didn't I? Just go on with it."

1. Tom came to New York ______.

A. to see a good doctor

B. for a holiday

C. to feel ill

D. to find a doctor

2. Doctor Thomas Brown asked for ______ for the first time.

A. one dollar

B. two dollars

C. nothing

D. three dollars

3. The doctor looked at Tom's face carefully because ______.

A. he knew Tom

B. he had seen Tom before

C. there was something wrong with his face

D. he wanted to know if Tom had been here before

4. Tom said,"I've come again, doctor." Because he ______.

 A.wanted to be friendly to the doctor

B.wanted to make the doctor happy

C.wanted to make the doctor angry

D.tried to make the doctor believe that he had been to him before

5. The doctor knew that ______.

A. Tom didn't want any medicine

B. he hadn't seen Tom before

C. he had given Tom some medicine before

D. Tom wasn't feeling ill

问答题 简答题

某市为促进精神文明建设,发展社区文化,丰富居民的文化生活,准备新建一个市文化艺术活动中心。市政府召集有关部门工作人员就此召开第一次筹备会议开展讨论。当会议对文化艺术活动中心选址问题讨论时,市规划局的老王首先提出了自己的选址方案。他从该市城市建设总体规划出发,认为建址选在离闹市区有一段距离的A地比较理想,因为几个新型的住宅小区将在这里建设起来,几年后这里就将成为新的闹市区,而且这里也是该市基础建设的重点地区。与会者觉得老王的建议很好,表示赞同。但是,市文化局的老张则不以为然,他认为活动中心地址选在闹市区附近的B处更为合适,因为这一带人口密集,能够照顾到绝大多数居民来中心参加活动,从而真正有效地满足广大居民对文艺生活的需要。与会者认为老张的意见也言之有理,B地也是一个好地方。老张与老王意见的分歧,使会议陷入了僵局。这里最为难的还是其他与会人员,既然两种方法都不错,很难分出孰优孰劣,他们一时就难以继续发表意见,一个个表情严肃,会场一片寂静。大约持续了两分钟之后,市政府办公厅的李明终于打破了这种僵局,他谈了自己的看法。大意包括两层意思:首先,他认为老王和老张对活动中心选址问题的意见都具有合理性,A、B两地都是比较理想的可供选择的方案,但不主张在第一次筹建方案讨论会上就决定选址问题;其次,他建议市有关部门对A、B两地进行深入系统的实地勘察调查,同时在本市行政区域范围内选择可供选择的建设地点,在此基础上,再按文化艺术活动中心总的建设要求进一步分析比较,以选择最佳方案。李明的意见最终得到了与会人员的一致赞同。

李明的意见为什么能得到与会者的一致赞同?其意见的科学性、艺术性何在?