收集的某地下水监测井年内丰、枯水期两期地下水质监测资料，水质监测项目共有18项，均为

下列关于加速度的说法正确的是[ ]

A．物体速度越大，则加速度就越大

B．加速度大的物体，其速度可能很小

C．加速度越大，速度变化量就越大

D．物体加速度大，但速度变化可以慢

二尖瓣狭窄最常见的病因是

A．炎症

B．黏液样变性

C．退行性改变

D．缺血性坏死

E．创伤

①永结无情游，                               。 （李白《月下独酌》）

②山映斜阳天接水，                                   ，更在斜阳外。 （范仲淹《苏幕遮》）

③邹忌修八尺有余，                                   。 （《邹忌讽齐王纳谏》）

④一箪食，一豆羹，得之则生，                                        。 （《鱼我所欲也》）

⑤《木兰诗》中描写战事频繁而惨烈，经历了长期战斗岁月而木兰最终英雄般凯旋的句子是（共10字）：                                   ，                                   。

阅读理解

     Isaac Stern was more than a great violin player. He was one of the most honored musicians in the

world, an international cultural ambassador. And he was also a teacher and activist. For more than sixty

years, Mr. Stern performed excellent music. He performed in concerts around the world and on

recordings.

     Isaac Stern was born in 1920 in Ukraine. His parents moved to California the following year. He began

taking violin lessons after hearing a friend play the instrument. Later, he began studying music at the San

Francisco Conservatory(旧金山音乐学院). He progressed quickly. When he was sixteen, he played

with the San Francisco Symphony Orchestra. The next year, he performed in New York and was

praised by music critics.

     Isaac Stern became one of the busiest musicians of his day. He played more than one hundred

concerts a year. He also became one of the most recorded musicians in history. Isaac Stern also

supported artistic development and freedom.

     In 1979, Isaac Stern visited China. He met with Chinese musicians and students. He taught them

about classical Western music. His visit was made into a film. It is called From Mao to Mozart:Isaac

Stern in China. It won an Academy Award for best documentary film.

     In 1984, Isaac Stern received the Kennedy Center Honors Award for his gifts to American culture

through music. He expressed his thoughts about the part that music plays in life. He said music is an

important part of a civilized life. He said people need music as much as they need bread.

     Isaac Stern died in 2001 at the age of eighty-one. He was a major influence on music in the twentieth

century. He leaves the world richer with his many recordings.

1. What did Isaac Stern think of music?

A. Necessary.        

B. Difficult.

C. Entertaining.            

D. Interesting.

2. The passage mentioned Isaac Stern's visit to China mainly to ________.

A. encourage people to develop the international relationship

B. advise the readers to take up music

C. introduce more achievements of Isaac Stern

D. show he acted as an international cultural ambassador

3. Which of the following statements is TRUE about Isaac Stern?

A. He was born in California in the 1920s.

B. He had visited many countries to advertise his recordings.

C. He played less than one hundred concerts in all.

D. His excellent music life lasted over 60 years.

4. From the passage, we can infer that ________.

A. Isaac Stern influenced the culture in the 20th century a lot

B. Isaac Stern was one of the most active musicians of his day

C. Isaac Stern was so busy that he couldn't spare time to educate the youth

D. Isaac Stern led a rich life in his later life

5. What will be the best title for the passage?

A. Isaac Stern and the awards he got

B. Isaac Stern's life of pursuing music

C. Isaac Stern:one of the most honored musicians

D. Isaac Stern's visit to China

下面哪些协议把TCP/IP作为它的底层协议（）

A.简单邮件传输协议（SMTP）

B.文件传输协议（FTP）

C.域名系统（DNS）

D.远程登录协议（TELNET）