问题 单项选择题 B1型题

窝沟龋中最多的是()

A.变形链球菌

B.乳酸杆菌

C.放线菌

D.韦荣菌

E.棒状杆菌

答案

参考答案:A

解析:考点:各种龋损的治病菌。变形链球菌在各个牙面均可发现,致龋力最强,其中窝沟龋和变形链球菌关系最紧密,所以2选A,13选A。乳酸杆菌能够产酸耐酸与龋的进展有关,放线菌常在人和实验动物的根面龋损中检测出来,所以1选C。韦荣菌为厌氧菌在深龋和牙髓炎中可被检测出来。

阅读理解

阅读理解。

     Who is your hero (偶像)? Why do you like the person? Cool looks? Money? A lot of talent (才华)?

      Shanghai teenagers say they look for more than that. Most of them say their heroes are hard-working and

brave.

     NBA star Yao Ming was the No.1Chinese hero with 48 per cent of all votes (投票). Zheng Hua, a

13-year-old boy from Shanghai, told us that it was hard for him to go all the way to the NBA. He's a big star.

Most of us think he is still kind and loves others after he becomes a famous star. He also helps disabled (残疾

的) children.

     Jay Zhou from Taiwan is the teen's most favorite star. Liu Yan from a high school of Shanghai is one of

Jay's big fans. In her sight, Jay is not just a pop star."Jay's so kind to his mother and grandma. He takes good

care of them," said Liu Yan.

     Wang Hao, from a high school of Guangdong, said he liked Zhou Enlai."He's great. He loved his people. He

saw people as his own children. And he never thought he was different from others."

     Shanghai students also like US businessman Bill Gates. More than half consider him as their hero. One

teenager from Beijing who likes Gates said,"Bill was not born rich. He worked hard. And he doesn't like to tell

everyone how rich he is. He also has courage (勇气). He left school to start his own business."

1. Most of the teenagers think their heroes must be_______.

A. hard-working and brave

B. rich and good-looking

C. talent and good-looking

D. brave and talent

2. Teenagers like Yao Ming because _______after he becomes a famous star.

A. he is kind and brave

B. he is kind and love others.

C. he had talent in playing basketball

D. he is brave and tall

3. Young children love Zhou Enlai because__________.

A. he was a great leader

B. he was kind to the people

C. he was different from others

D. he loves reading

4. Teenagers see Bill Gates as their hero because _________.

A. he works hard and becomes very rich

B. he has courage and has a big company

C. he works hard and he has courage

D. he left school and later became famous

5. Which of the following is NOT true?

A. Most of the teenagers think their heroes must be rich and good-looking

B. 48% of the teenagers see NBA star Yao Ming as their hero

C. Teenagers think Zhou Enlai was very kind to his people

D. More than half of the teenagers see Bill Gates as their hero

单项选择题