练习册

  • 练习册
  • 试题
    A. once B. twice C. three times D. mouth 【查看更多】

     

    题目列表(包括答案和解析)

    阅读理解。
            Teeth are important. Strong , healthy teeth help you chew (咀嚼) foods that help you grow. They help you
    speak clearly. And yes, they help you look best. Here are some tips for you to take care of you teeth: 
           1. Brush your teeth the right way.
               Brush your teeth at least twice a day after breakfast and before bedtime. If you can, brush after lunch or
    after sweet snacks, too. Brush all of your teeth, not just the front ones. Spend time brushing teeth along the sides and back of your mouth. Spend at least three minutes each time you brush. Play a song you like to help pass the
    time. Get a new toothbrush every three months. When you buy toothbrush, be sure it has soft bristles (鬃毛). 
           2. Learn how to floss(用牙线剔牙) your teeth.
               Flossing is a very important way to keep your teeth healthy. Food may hide between two teeth. Flossing
    can help get rid of it. You'll need to floss your teeth at least once a day.
           3. Have good eating habits.
              You need to be careful about what you eat and drink. Eating sugar is a major cause of tooth decay(蛀牙). Eat lots of fruits and vegetables and drink water instead of soda（苏打）.
    1. How many times at least should we brush our teeth a day? ______
    [     ]
    A. 1
    B. 2
    C. 3
    D. 4
    2. What is the major cause of tooth decay? ______
    [     ]
    A. Not brushing teeth
    B. Not changing toothbrush
    C. Eating sugar
    D. Not flossing teeth
    3. How often should we change our toothbrushes? ______
    [     ]
    A. never
    B. three times a month
    C. every three months
    D. every month
    4. The bristles of the toothbrush must be______
    [     ]
    A. hard
    B. soft
    C. expensive
    D. not mentioned
    5. Which is the right way to take care of teeth? ______
    [     ]
    A. Only brush front teeth.
    B. Not brush teeth before sleeping.
    C. Spend at most three minutes to brush teeth each time.
    D. Eat lots of fruits and vegetables and drink water instead of soda.

    查看答案和解析>>

    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 dayB．three times a day
    C．four times a dayD．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 .

    查看答案和解析>>

    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 dayB．three times a day
    C．four times a dayD．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 .

    查看答案和解析>>


    同步练习册答案