Question

Height is just one of the thousands of features your genes(基因)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.The Chinese for the word “puberty” is _____.

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

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

A. you should have enough exercise    B. You can record your growth during puberty

C. you should save the environment    D. you can ask doctors for help

3.This passage is mainly about ______.

A. how the genes work in your body    B. when is the time you grow fast

C. why you look like your parents    D. how you grow to a certain height

4.After reading this passage, we can explain ______.

A. how good it is to be a doctor    B. how much sleep time we need

C. why genes can’t decide everything    D. what healthy diet is

5.Which is NOT mentioned in the passage?

A. Your height most probably depends on how high your parents are.

B. Girls’ age for starting puberty is usually earlier than that for boys’.

C. The time showing the first changes of puberty is never noticed.

D. You may be scared sometimes when you grow too fast.

Answer

1. B

2. D

3. D

4. C

5. C

【解析】

这篇短文主要告诉我们，我们的身高最可能取决于你的父母的身高，女孩的青春期一般比男孩开始的较早，以及当你生长过快时，你可能感到焦虑。

1.猜测词义。根据下文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.可知，puberty的意思是“生长发育期”故选B。

2.细节理解。根据文中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.可知，向医生寻求帮助。故选D。

3.主旨大意。通读整篇短文可知，这篇短文主要是关于你如何长到一定高度。故选D。

4.根据文中开头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.可知，基因不能决定人的生长的一切，还有很多后天的因素。故选C。

5.推理判断。根据文中If both your parents are tall, then most probably you will be tall, too,可知选项A正确的；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.可知选项B正确；Don't be scared if you seem to have grown a lot in a very short time.可知选项D是正确的。故选C