Height is just one of the thousands of features your genes decide. In fact, because you have two parents, your genes provide you a height that usually lands somewhere between the height of each parent. If both your parents are tall, then most probably you will be tall, too, but if you have questions about how tall you’re going to be, ask your doctor if he or she can help you find it out.
But genes don’t decide everything. For example, eating an unhealthy diet can keep you from growing to your full potential(潜力). Getting plenty of sleep and enough exercise will help you grow to the expected height.
No doubt you’re wondering how fast you should grow. It depends. There’s no perfect or right answer. Generally speaking, kids grow about 2 inches (6 centimeters) a year between age 3 and the time when they start puberty (when your body starts changing and becoming more grown up).
Your doctor will know how your growth has been going over the years. Two centimeters here and 2 inches there are not nearly as important as the height you’re at now, how you’ve been growing up to this point, and what other changes your body may be going through.
Don’t be scared if you seem to have grown a lot in a very short time. Everyone has a growth spurt(高峰)during puberty. The age for starting puberty is about 10 for girls and about 11 for boys. But it can be earlier or later ----between 7 and 13 for girls and 9 and 15 for boys.
You’ll usually begin to notice that you’re growing faster about a year or so after your body starts to show the first changes of puberty

  1. 1.

    The Chinese for the word “puberty” is______.

    1. A.
      童年时期
    2. B.
      婴幼儿时期
    3. C.
      习惯养成期
    4. D.
      生长发育期
  2. 2.

    If you want to know how fast and how tall you should grow,______.

    1. A.
      you should have enough exercise
    2. B.
      you can ask doctors for help
    3. C.
      you should save the environment
    4. D.
      You can record your growth during puberty
  3. 3.

    This passage is mainly about ______.

    1. A.
      how the genes work in your body
    2. B.
      when is the time you grow fast
    3. C.
      why you look like your parents
    4. D.
      how you grow to a certain height
  4. 4.

    After reading this passage, we can explain ______.

    1. A.
      how good it is to be a doctor
    2. B.
      how much sleep time we need
    3. C.
      why genes can’t decide everything
    4. D.
      what healthy diet is
  5. 5.

    Which is NOT mentioned in the passage?

    1. A.
      Your height most probably depends on how high your parents are
    2. B.
      Girls’ age for starting puberty is usually earlier than that for boys’
    3. C.
      The time showing the first changes of puberty is never noticed
    4. D.
      You may be scared sometimes when you grow too fast

A school bus is one that is used to take children to and from school.
In the USA, about 450,000 school buses take more than 25 million children to and from school. The yellow school bus is a US icon(象征).Yellow became the color of school buses in the USA in 1939. Dr. Frank got the good idea. He said it was easy for people to see yellow buses and the black letters on them in early morning or late afternoon. That would make children safer.
There are not many school buses in Britain, and they are not yellow. They have trackers(跟踪器) on them, so kids are being tracked while they travel to and from school by bus. The trackers let parents know where the school bus is and whether their kinds are on the bus.
Kindergarten(幼儿园) is difficult time for some kids. It’s the first time for them to go away from their parents. To make kids love their school, Japanese kindergartens and schools have colorful buses. The buses can easily make children want to take them---and then, go to school. Even some parents want to take them, too!
School buses are becoming more and more popular in Chian now. It saves a lot of time for students to take a school bus. It’s said that there will be 3,000 yellow school buses on the road by the end of this year in Chongqing

  1. 1.

    According to Dr. Frank, ______ school buses are safer for the students

    1. A.
      yellow
    2. B.
      black
    3. C.
      white
    4. D.
      colorful
  2. 2.

    Children in Japan may easily ______ by taking the school bus

    1. A.
      save time
    2. B.
      love their school
    3. C.
      play games
    4. D.
      do their homework
  3. 3.

    Chinese students will save a lot of time to ______ to school

    1. A.
      walk
    2. B.
      take a taxi
    3. C.
      ride a bike
    4. D.
      take a school bus
  4. 4.

    This passage is mainly about ________

    1. A.
      school buses
    2. B.
      school life
    3. C.
      popular colors
    4. D.
      students’ safety
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