Question

After graduating from middle school, many students grow very fast, especially boys. And the teachers have to look up at their faces to show love for them. Why do they grow so fast?

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 perhaps 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(潛力). Getting enough sleep and exercise will help you grow to the right height.

No doubt you’re wondering how fast you should grow. It depends. There’s no perfect or right answer. Kids grow about 5 cm a year between age 3 and the time when they start puberty（when your body starts changing and becoming more grown up. ）

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 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.What does the underlined word “puberty” mean in Chinese?

A.童年時代 B.嬰幼兒時期 C.青春期

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

A.you should have enough exercise

B.you should ask doctors for help

C.you can record your growth during puberty

3.Girls’ growth spurt can be _______________.

A.14 B.13 C.15

4.Which is true according to the passage？

A.Girls’ age for starting puberty is usually later than that of boys’.

B.You height never depends on genes.

C.Everyone has a growth spurt during puberty.

5.The passage is mainly about _______________.

A.Height. B.Weight. C.Genes.

Answer 1