Question

The Healthy Habits Survey shows that only about one third of American seniors have correct habits. Here are some findings and expert advice.

1. How many times did you brush your teeth yesterday?

·Finding: A full 33% of seniors brush their teeth only once a day.

·Step:  Remove the 300 types of bacteria in your mouth each morning with a battery-operated toothbrush. Brush gently for 2 minutes, at least twice a day.

2. How many times did you wash your hands or bathe yesterday?

·Finding: Seniors, on average, bathe fewer than 3 days a week. And nearly 30% wash their hands only 4 times a day---half of the number doctors recommend.

·Step:  We touch our faces around 3,000 times a day---often inviting germs（病菌）to enter our mouth, nose, and eyes. Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.

3. How often do you think about fighting germs?

· Finding: Seniors are not fighting germs as well as they should.

· Step:  Be aware of germs. Do you know it is not your toilet but your kitchen sponge（海绵）that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.

1. How many times did you brush your teeth yesterday?

·Finding: A full 33% of seniors brush their teeth only once a day.

·Step:  Remove the 300 types of bacteria in your mouth each morning with a battery-operated toothbrush. Brush gently for 2 minutes, at least twice a day.

2. How many times did you wash your hands or bathe yesterday?

·Finding: Seniors, on average, bathe fewer than 3 days a week. And nearly 30% wash their hands only 4 times a day---half of the number doctors recommend.

·Step:  We touch our faces around 3,000 times a day---often inviting germs（病菌）to enter our mouth, nose, and eyes. Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.

3. How often do you think about fighting germs?

· Finding: Seniors are not fighting germs as well as they should.

· Step:  Be aware of germs. Do you know it is not your toilet but your kitchen sponge（海绵）that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.

1.What is found out about American seniors?

A. Most of them have good habits.

B. Nearly 30% of them bathe three days a week.

C. All of them are fighting germs better than expected.

D. About one third of them brush their teeth only once a day

2.Doctors suggest that people should wash their hands           .

A. eight times a day    B. three times a day

C. four times a day    D. twice a day

3.Which of the following is true according to the text?

A. We should keep from touching our faces.

B. There are less than 300 types of bacteria in the mouth.

C. A kitchen sponge can carry more germs than a toilet.

D. We should wash our hands before touching a door handle.

4.The text probably comes from             .

A. a guide book    B. a popular magazine

C. a book review    D. an official document

Answer

1. D

2. A

3. C

4. B

【解析】

本文是一篇说明文，很多美国的高中生并没有很好的生活习惯，Healthy Habits Survey 进行了一项调查，文章叙述了调查的结果也给出了专家的建议。

1.细节理解题。根据1中“A full 33% of seniors brush their teeth only once a day.”可知有三分之一的学生一天刷一次牙齿。故D项正确。

2.数字计算题。根据2中“And nearly 30% wash their hands only 4 times a day---half of the number doctors recommend.”可知百分之30的学生一天洗四次手，这个数字是医生建议数字的一半。由此可知医生建议我们一天洗八次手。故A项正确。

3.细节理解题。根据3中“Do you know it is not your toilet but your kitchen sponge（海绵）that can carry more germs than anything else?”可知厨房里的海绵上的细菌是最多的，要比厕所的细菌更多。故C项正确。

4.推理判断题。根据文章第一句“The Healthy Habits Survey shows that only about one third of American seniors have correct habits. Here are some findings and expert advice.”可知本文是The Healthy Habits Survey 对学生卫生习惯的调查结果，文章最可能是从健康类杂志上摘录而来的。与旅行手册、书评和官方文件无关。故B项正确。