Height is just one of the thousands of features your genes decide. In fact, because you h

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.
【小题1】. The Chinese for the word “puberty” is .A．童年时期B．婴幼儿时期C．习惯养成期D．生长发育期【小题2】 If you want to know how fast and how tall you should grow, .A．you should have enough exerciseB．you can ask doctors for helpC．you should save the environmentD．You can record your growth during puberty【小题3】 This passage is mainly about .A．how the genes work in your bodyB．when is the time you grow fastC．why you look like your parentsD．how you grow to a certain height【小题4】 After reading this passage, we can explain .A．how good it is to be a doctorB．how much sleep time we needC．why genes can’t decide everythingD．what healthy diet is【小题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.D【小题1】B【小题1】D【小题1】C【小题1】C

(答案→)D【小题1】B【小题1】D【小题1】C【小题1】C 解析：【小题1】根据单词的意思和文章内容文章内容语境，可知：每个人在生长发育期都有发育高峰期。答案为D【小题2】根据文章内容Your doctor will know how your growth has been going over the years.可知答案为B【小题3】根据文章内容大意：可知是怎么长到一定的高度，答案为D【小题4】根据文章内容But genes don’t decide everything.可知答案为C【小题5】根据文章第一段的句子：In fact, because you have two parents, your genes provide you a height that usually lands somewhere between the height of each parent.可知A正确，第五段的句子：The age for starting puberty is about 10 for girls and about 11 for boys.可知B正确，第五段的句子：Don’t be scared if you seem to have grown a lot in a very short time可知D正确，可知答案为C

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