Height is just one of the 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 them 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 plenty of sleep and enough exercise will help you grow to the expected height.
It’s natural that you’re wondering how fast you should grow. There’s no perfect or right answer. Generally speaking, kids grow about 6 cm a year between age 3 and the time when they start puberty .
Your doctor will know how your growth has been going over the years. 2 cm here and 3 cm there make a little difference to the height you’re at now. How have you been growing up to this height？What other changes may your body be going through？
Don’t be amazed 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 after your body starts to show the first changes of puberty.
小題1:If you want to know how tall you should grow, _______.
A．you should have enough exercise
B．you can ask doctors for help
C．you should take some special medicine
D．you can record your growth during puberty
小題2:The Chinese for the word “ puberty ” is _______.
A．童年時(shí)期B．?huà)胗變簳r(shí)期
C．習(xí)慣養(yǎng)成期D．生長(zhǎng)發(fā)育期
小題3:This passage is mainly about ______.
A．how the genes work in your body
B．how your parents’ height influence you
C．how you look like your parents
D．how you grow to a certain height
小題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
小題5:Which is NOT mentioned in the passage？
A．Your height most probably depends on how tall your parents are.
B．Girls’ age for starting puberty is usually earlier than that for boys’.
C．The features showing the first changes of puberty between boys and girls are different.
D．You may be amazed sometimes when you grow too fast.

小題1:B
小題2:D
小題3:D
小題4:C
小題5:C

試題分析：短文大意：這篇短文主要講述了人的身高問(wèn)題，通過(guò)短文我們可以知道，你的身高大部分依賴于你父母的身高，女孩的青春期一般比男孩子早，你可能有時(shí)對(duì)于自己長(zhǎng)得過(guò)快感到驚訝。
小題1:細(xì)節(jié)理解題。根據(jù)But if you have questions about how tall you’re going to be, ask your doctor if he or she can help you find them out.描述，可知如果你想知道自己能長(zhǎng)多高，可以去請(qǐng)教醫(yī)生。故選B。
小題2:詞義猜測(cè)題。聯(lián)系前文kids grow about 6 cm a year between age 3 and the time描述，可知此處指的是，從三歲到青春期開(kāi)始之前，故選D。
小題3:主旨大意題。閱讀短文可知，這篇短文主要談到了人如何長(zhǎng)高的問(wèn)題，故選D，你如何長(zhǎng)到一定的高度。
小題4:細(xì)節(jié)理解題。閱讀短文可知，這篇短文告訴我們身高與基因相關(guān)，但并不是決定因素，故選C，為什么基因不能決定一切。
小題5:細(xì)節(jié)理解題。閱讀短文可知，這篇短文主要講述了你的身高大部分依賴于你父母的身高，女孩的青春期一般比男孩子早，你可以有時(shí)對(duì)于自己長(zhǎng)得過(guò)快感到驚訝。沒(méi)有關(guān)于男女青春期的區(qū)別的描述，故選C，男生和女生的青春期的第一變化是不同的。
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A.       B.      C.

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