苯二氮类的药理作用机制是A．阻断谷氨酸的兴奋作用 B．抑制GABA代谢增加其脑内含量

为国土资源行政主管部门用地审批和地籍管理等提供科学、准确的基础资料而进行的技术服务性工作是______。

A．初始权属调查
B．农村土地调查
C．变更权属调查
D．土地勘测定界

一根弹簧，在弹性限度内，悬挂15N重物时，弹簧长度为0.16 m；悬挂20 N重物时，弹簧长度为0.18 m，则弹簧的原长为_________m，劲度系数为         N/m。

以下可以用来鉴别米象和玉米象的特征有（）

A、体色

B、体长

C、触角类型

D、外生殖器

.

第三部分：阅读理解（共20小题；每小题2分，满分40分）

阅读下面文章，从每题所给的A、B、C、D四个选项中选出最佳选项，并在答题卡上将该项涂黑。

It was the afternoon of December 24, the day before Christmas, and as the newest doctor in our office, I had to work. The only thing that brightened my day was the beautifully decorated Christmas tree in our waiting room and a gift sent to me by a fellow I was dating(约会)—a dozen long-stemmed red roses. 

As I was cleaning my office, I was told a lady urgently needed to speak with me. As I stepped out, I noticed a young, tired-looking woman with a baby in her arms. Nervously, she explained that her husband—a prisoner in a nearby prison—was my next patient. She told me she wasn’t allowed to visit her husband in prison and that he had never seen his son. Her request was for me to let the boy’s father sit in the waiting room with her as long as possible before I called him for his appointment（约见）. Since my schedule wasn’t full, I agreed. After all, it was Christmas Eve. 

A short time later, her husband arrived—with chains on his feet and hands, and two armed guards as bodyguards. The woman’s tired face lit up like our little Christmas tree when her husband took a seat beside her. I kept glancing out to watch them laugh, cry and share their child. After almost an hour, I called the prisoner back to my office. The patient seemed like a gentle and modest man. I wondered what he possibly could have done to be held under such conditions. I tried to make him as comfortable as possible.

At the end of the appointment, I wished him a Merry Christmas—a difficult thing to say to a man headed back to prison. He smiled and thanked me. He also said he felt saddened by the fact that he hadn’t been able to get his wife anything for Christmas. On hearing this, I was inspired with a wonderful idea.

I’ll never forget the look on both their faces as the prisoner gave his wife the beautiful, long-stemmed roses. I’m not sure who experienced the most joy—the husband in giving, the wife in receiving, or myself in having the opportunity to share in this special moment.

51.What can be inferred from the first paragraph?

A. The writer was a newcomer to her office. 

B. A fellow sent her a dozen red roses as Christmas present.

C. She was in low spirits because she had to work before Christmas.

D. She was at work with a light heart.

52. The young woman came to the writer’s office for the purpose of         .

A. having her baby examined      

B. giving her husband a chance to make his escape

C. having her husband examined  

D. getting a chance for her family to get together

53.The underlined part in Paragraph 3 most probably means “         ”. 

A. to be sent to hospital      B. to be separated from his family

C. to be comfortable             D. to become a prisoner

54. What does the writer learn from the story?

A. The wife experienced the most joy in receiving. 

B. An act of kindness can mean a lot.

C. The prisoner was treated with mercy.      

D. Whoever breaks the law should be punished.

对于形状简单，生产批量大的小型型芯可采用浸涂法上涂料，但浸入的时间不应超过（）秒。

A.3

B.4

C.5