病历摘要：患者，男，20岁，主诉发现颈部包块1月。无鼻塞和鼻涕带血，亦无回吸性血涕。

阅读理解。

      Mr Brown likes singing very much, but he is very bad at it. (1) He went to dinner at a friend's house

last week, and there were some other guests there, too.

      They had a good dinner, and then the hostess went to Mr Brown and said, "You can sing, Peter. Please

(2) sing us something."

      Mr Brown was very happy, and he began to sing an old song about the mountains of England. The guests

listened to it for a few minutes and then (3) one of the guests began to cry. She was a small woman. 

      One of the other guests went to her, put his hand on her back and said, "Please don't cry. Are you English?"

      Another young man asked, "Do you love England?" "No," she answered, "I'm not English, and I've never

been to England. I'm a singer, and I love music!"

1. 将划线部分(1)合并为一句：

     He went to dinner  ______ at a friend's house last week. 

2.  完成句子，使其意思与划线部分(2)相同。

     Please sing _______ us.

3.   在划线部分(3)中，one 指代 ________. 

根据短文内容，判断正误(T) (F) 。

( )4. Peter was Mr Brown’s given name.                                       

( )5. Mr Brown didn’t do well in singing.                                    

( )6. The guests asked Mr Brown to sing them a song.                          

( )7. All the guests listened to him very carefully and happily.              

( )8. Mr Brown sang a popular song.                                           

( )9. One guest heard Mr Brown’s song and cried because she came from England.  

关于苯的下列说法正确的是   (　　)

A．苯的分子是环状结构，其性质跟环烷烃相似

B．表示苯的分子结构，其中含有碳碳双键，因此苯的性质跟烯烃相同

C．苯的分子式是C₆H₆，分子中的C原子远没有饱和，因此能使溴水褪色

D．苯环上的碳碳键的键能、键长介于单双键之间

1999年九届全国人大通过的宪法修正案对我国宪法作了重要修改，下列哪些内容是这一修正案包括的主要内容( )。

A．明确把“发展社会主义市场经济”写进宪法

B．明确把“依法治国，建设社会主义法治国家”写进宪法

C．明确规定“国家加强立法，完善宏观调控”

D．明确规定“国 * * 护个体经济、私营经济的合法的权利和利益”

企业研制新产品、改进产品、进行技术改造和技术引进，都（）进行标准化审查。

A.不必

B.应该

C.可以

D.必须

接收机静噪电路有什么作用，以下哪些说法是正确的？（）

A.无接收信号时，锁闭接收机的音频放大电路，避免对使用者的噪声干扰。

B.无接收信号时，锁闭接收机的音频放大电路，不能避免对使用者的噪声干扰。

C.接收到信号后，自动打开接收机锁闭状态，影响正常通话。

D.接收到信号后，自动打开接收机锁闭状态，不影响正常通话。