The Healthy Habits Survey shows that only about one third of American seniors(年长者) 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(细菌) 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 which 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：  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.
小题1:What is found out American seniors?

A．Most of them have good habits.

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

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

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

小题2: Doctors suggest that people should wash their hands          .

A．twice a day	B．three times a day
C．four times a day	D．eight times a day

小题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 .

小题1:D
小题2:D
小题3:C

试题分析：这篇短文中作者主要讲述了关于美国老年人卫生习惯的调查，发现只有大约三分之一的老年人有良好的卫生习惯。
小题1:细节理解题。根据短文信息A full 33% of seniors brush their teeth only once a day.描述可知只有大约三分之一的老年人每天只刷一次牙。故答案选D。
小题2:推理判断题。根据短文信息And nearly 30% wash their hands only 4 times a day---half of the number which doctors recommend描述可知几乎百分之三十的老年人一天只洗四次手----是医生推荐量的一半。可见医生建议一天要洗八次手。故答案选D。
小题3:细节理解题。根据短文信息Do you know it is not your toilet but your kitchen sponge（海绵）that can carry more germs than anything else?可知厨房海绵携带病菌的数量要比厕所还要多。故答案选C。