问题 单项选择题 A1/A2型题

消化性溃疡形成的最重要病因是()

A.幽门螺杆菌感染

B.胃酸/胃蛋白酶

C.NASID

D.吸烟

E.遗传

答案

参考答案:A

解析:确认幽门螺杆菌为消化性溃疡的病因主要有两方面的证据:(1)消化性溃疡患者的幽门螺杆菌检出率显著高于对照组的普通人群,十二指肠的检出率为90%,胃溃疡的检出率为70%~80%。(2)大量研究表明成功根除幽门螺杆菌后溃疡复发率明显下降,根除幽门螺杆菌可使溃疡复发率降至5%以下。

阅读理解

阅读理解。

     As you research music, you will find music that is familiar to you. You will find music which tells of

interesting places and exciting things to do. You will find music which expresses feelings that are often your own.

     Music is an expression of the people. As you research, you will find music of people at work and play. You will find music expressing love of the country, love of nature, and love of home.

     Music is also an expression of the composer(作曲家). The composer expresses his own musical ideas. He studies the materials of music and discovers ways of using them. He looks for new kinds of musical

expression.

     Music can suggest actions and feelings which we all share. We can enjoy playing and singing music,

dancing and listening to the music of the people and the composers of different times and places.

1. In the first paragraph, the author tells us to_______.

A. find entertainment (娱乐) in music  

B. be friendly to music

C. express your feelings in music    

D. discover the things and places in music

2. From the second paragraph, we know that ________.

A. if we love music, we will love the country, nature and home

B. music sings of the country, nature and home

C. you may listen to music at work or at play

D. music can express how people live, work and think

3. By means of music, the composer wishes that ________.

A. you would study with them    

B. you would share his feelings and ideas

C. you would express your own feelings

D. you help discover ways of using music and new kinds of musical expression

4. The last paragraph shows that music makes it possible ________.

A. the music can express actions and feelings at the same time

B. bring understanding between people of different times and places

C. that people can enjoy playing and singing music, dancing and listening to the music at the same time

D. that people of different time and places can get together

5. Which of the following statements is NOT true. Music expresses ________.

A. the feelings of our own    

B. people's love of the country

C. the composer's feelings    

D. people's musical ideas

单项选择题