登录
B
Our bodies grow and change in many different ways.
As teenagers grow older, their bodies will reach their full adult height. This is one of the biggest changes. But how tall can teenagers grow? Do you know that height is one of the many features（特征）decided by your genes（基因）? Your genes give you a height that usually matches your parents' heights. This means if both parents are tall, their child will probably be tall too. However, genes don't decide everything. For example, an unhealthy diet can stop your body from growing well. Getting enough sleep and regular（规律的）
exercise will help you reach your natural height. That's why eating healthy food and staying active every day are so important for growth.
How fast do people grow? Babies grow very quickly in their first year, becoming about 25 cm taller and 6 kg heavier. Puberty is an important stage when many big changes happen. Most girls start puberty around age ten, and boys around age eleven. During this time, teenagers grow fast, grow hair on some parts of their bodies, and their voices change too.
Don't worry if you grow a lot in a short time or feel different from others of your age. If you have questions, talk to your parents or teachers — they're always there to help.
(
A. How tall we can grow.
B. Doing sports can help us grow well.
C. Healthy food is good for our bodies.
D. Our genes provide us with a certain height.
(
A. Old age.
B. Adult years.
C. Teenage years.
D. Baby years.
(
A. Try to solve them by ourselves.
B. Try to get ideas from books.
C. Turn to friends or classmates.
D. Ask parents or teachers for help.
(
A. adults
B. teachers
C. teenagers
D. scientists
(
A. A novel.
B. A life guide.
C. A storybook.
D. A sports magazine（杂志）.
Our bodies grow and change in many different ways.
As teenagers grow older, their bodies will reach their full adult height. This is one of the biggest changes. But how tall can teenagers grow? Do you know that height is one of the many features（特征）decided by your genes（基因）? Your genes give you a height that usually matches your parents' heights. This means if both parents are tall, their child will probably be tall too. However, genes don't decide everything. For example, an unhealthy diet can stop your body from growing well. Getting enough sleep and regular（规律的）
exercise will help you reach your natural height. That's why eating healthy food and staying active every day are so important for growth.
How fast do people grow? Babies grow very quickly in their first year, becoming about 25 cm taller and 6 kg heavier. Puberty is an important stage when many big changes happen. Most girls start puberty around age ten, and boys around age eleven. During this time, teenagers grow fast, grow hair on some parts of their bodies, and their voices change too.
Don't worry if you grow a lot in a short time or feel different from others of your age. If you have questions, talk to your parents or teachers — they're always there to help.
(
A
)46. What is the second paragraph mainly about?A. How tall we can grow.
B. Doing sports can help us grow well.
C. Healthy food is good for our bodies.
D. Our genes provide us with a certain height.
(
C
)47. What does the underlined word "Puberty" mean?A. Old age.
B. Adult years.
C. Teenage years.
D. Baby years.
(
D
)48. What is the writer's advice if we have any problems?A. Try to solve them by ourselves.
B. Try to get ideas from books.
C. Turn to friends or classmates.
D. Ask parents or teachers for help.
(
C
)49. The text is for .A. adults
B. teachers
C. teenagers
D. scientists
(
B
)50. Where does the text may come from?A. A novel.
B. A life guide.
C. A storybook.
D. A sports magazine（杂志）.
答案
46. A 由第二段第三句可知本段的主旨。下面的内容都围绕这句话展开。
47. C 由下一句话可知，puberty 意为“青春期”，即 teenage years。
48. D 由最后一段最后一句可知作者的建议。
49. C 通读全文可知，本文是针对青少年写的，告诉他们一些生理常识，给他们一些成长的建议。
50. B 本文主要讲了两方面内容：我们能长多高和我们应该长多快，并告诉青少年有任何问题要向家长或老师寻求帮助。由此可知是生活指导方面的内容。
47. C 由下一句话可知，puberty 意为“青春期”，即 teenage years。
48. D 由最后一段最后一句可知作者的建议。
49. C 通读全文可知，本文是针对青少年写的，告诉他们一些生理常识，给他们一些成长的建议。
50. B 本文主要讲了两方面内容：我们能长多高和我们应该长多快，并告诉青少年有任何问题要向家长或老师寻求帮助。由此可知是生活指导方面的内容。
解析
【分析】本题为英语阅读理解题，包含主旨大意题、词义猜测题、细节理解题，需根据各问题定位原文对应段落或语句，分析选项与原文的匹配度：46题需找第二段核心主旨，47题需结合上下文猜测生词含义，48题需定位最后一段的建议句，49题需结合全文内容判断阅读对象，50题需根据文章内容判断出处。
【解析】46题：定位第二段，本段围绕“青少年能长多高”展开，核心句为“But how tall can teenagers grow?”，其余选项为段落部分细节，故选A；47题：根据后文“Most girls start puberty around age ten, and boys around age eleven. During this time, teenagers grow fast...”可知，puberty指青少年的成长阶段，即“青春期”，对应teenage years，故选C；48题：定位最后一段最后一句“If you have questions, talk to your parents or teachers — they're always there to help.”，明确建议是向父母或老师求助，故选D；49题：全文围绕青少年的成长变化、身高、成长速度及成长建议展开，阅读对象为青少年，故选C；50题：文章内容是关于青少年成长的生活指导，并非小说、故事或体育杂志，故选B。
【答案】46.A 47.C 48.D 49.C 50.B
【知识点】英语阅读理解、主旨大意、细节理解
【点评】本题考查英语阅读的基础能力，涵盖主旨把握、词义猜测、细节定位等考点，题型常规，学生通过定位原文信息即可解答，难度适中。
【难度系数】0.6
【解析】46题：定位第二段，本段围绕“青少年能长多高”展开，核心句为“But how tall can teenagers grow?”，其余选项为段落部分细节，故选A；47题：根据后文“Most girls start puberty around age ten, and boys around age eleven. During this time, teenagers grow fast...”可知，puberty指青少年的成长阶段，即“青春期”，对应teenage years，故选C；48题：定位最后一段最后一句“If you have questions, talk to your parents or teachers — they're always there to help.”，明确建议是向父母或老师求助，故选D；49题：全文围绕青少年的成长变化、身高、成长速度及成长建议展开，阅读对象为青少年，故选C；50题：文章内容是关于青少年成长的生活指导，并非小说、故事或体育杂志，故选B。
【答案】46.A 47.C 48.D 49.C 50.B
【知识点】英语阅读理解、主旨大意、细节理解
【点评】本题考查英语阅读的基础能力，涵盖主旨把握、词义猜测、细节定位等考点，题型常规，学生通过定位原文信息即可解答，难度适中。
【难度系数】0.6
