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Keep healthy
保持健康
主题: 人与自我/健康生活 难度星级: ★★★★☆ 用时: /8分钟 KEY→D19
Everybody should have a healthy body. Do you know BMI (身体质量指数)? It can help us know about our bodies. This is Tina. Her height is 1.4 m. Her weight is 50 kg. So, her BMI is $50÷(1.4×1.4)\approx25.5$. She's too fat. She should do something!
What should Tina do? She has many ways to be healthy. In the morning, she can get up early and do morning exercises. Running and swimming can help her be healthy too. She should also try to be happy. If she is happy, she can eat and sleep well. Her body is sure to be in a good condition.
BMI
＜18.5 too thin
18.5~23.9 good
≥24 too fat
词汇积累
height /haɪt/ n. 高；高度
weight /weɪt/ n. 重量
condition /kən'dɪʃn/ n. 状态；境况
be sure to ... 肯定；必然会
Read and choose. 根据材料内容，选择最佳答案。
（
A. Watch TV once a week. B. Do morning exercises. C. Go to bed late.
（
A. 15.625. B. 18.5. C. 20.
（
A. If Tina often feels good, her body will be in a good condition.
B. Tina only needs to run to keep healthy.
C. BMI can help us know about our bodies.
（
A. too thin B. healthy C. too heavy
（
A. To tell us how to calculate(计算) BMI.
B. To ask us to do morning exercises every day.
C. To tell us to keep healthy.
保持健康
主题: 人与自我/健康生活 难度星级: ★★★★☆ 用时: /8分钟 KEY→D19
Everybody should have a healthy body. Do you know BMI (身体质量指数)? It can help us know about our bodies. This is Tina. Her height is 1.4 m. Her weight is 50 kg. So, her BMI is $50÷(1.4×1.4)\approx25.5$. She's too fat. She should do something!
What should Tina do? She has many ways to be healthy. In the morning, she can get up early and do morning exercises. Running and swimming can help her be healthy too. She should also try to be happy. If she is happy, she can eat and sleep well. Her body is sure to be in a good condition.
BMI
＜18.5 too thin
18.5~23.9 good
≥24 too fat
词汇积累
height /haɪt/ n. 高；高度
weight /weɪt/ n. 重量
condition /kən'dɪʃn/ n. 状态；境况
be sure to ... 肯定；必然会
Read and choose. 根据材料内容，选择最佳答案。
（
B
）1. What can Tina do to keep healthy?A. Watch TV once a week. B. Do morning exercises. C. Go to bed late.
（
A
）2. 数字计算 If a girl is 1.6 m tall and weighs 40 kg, what is her BMI?A. 15.625. B. 18.5. C. 20.
（
B
）3. According to the material, which of the following is NOT true?A. If Tina often feels good, her body will be in a good condition.
B. Tina only needs to run to keep healthy.
C. BMI can help us know about our bodies.
（
B
）4. If someone's BMI is 22, he/she is healthy
.A. too thin B. healthy C. too heavy
（
C
）5. 写作意图 What is the main purpose of this material?A. To tell us how to calculate(计算) BMI.
B. To ask us to do morning exercises every day.
C. To tell us to keep healthy.
答案
1. B
2. A 解析 代入 BMI 公式计算 $40÷(1.6×1.6)=40÷2.56=15.625$ 可得结果。
3. B 解析 文中提到了多种保持健康的方式“She has many ways to be healthy ... do morning exercises. Running and swimming can help her be healthy too.”，说明不是“只需要跑步”。
4. B
5. C 解析 文章先介绍 BMI 的作用，再通过蒂娜的例子说明保持健康的方法，核心目的是呼吁大家保持健康。
2. A 解析 代入 BMI 公式计算 $40÷(1.6×1.6)=40÷2.56=15.625$ 可得结果。
3. B 解析 文中提到了多种保持健康的方式“She has many ways to be healthy ... do morning exercises. Running and swimming can help her be healthy too.”，说明不是“只需要跑步”。
4. B
5. C 解析 文章先介绍 BMI 的作用，再通过蒂娜的例子说明保持健康的方法，核心目的是呼吁大家保持健康。
解析
【分析】
首先通读全文，明确文章围绕“保持健康”主题，介绍BMI的作用及保持健康的方法。解题时，第1题需定位Tina保持健康的具体做法；第2题运用BMI公式（BMI=体重÷(身高×身高)）计算；第3题需对比选项与原文细节，找出错误表述；第4题根据BMI区间判断身体状态；第5题需梳理文章核心内容，确定写作意图。
【解析】
1. 细节理解题：根据原文第二段“In the morning, she can get up early and do morning exercises. Running and swimming can help her be healthy too.”可知，Tina可通过做早操保持健康，A选项“每周看一次电视”、C选项“晚睡”不符合健康要求，故选B。
2. 计算题：代入BMI公式，体重为40kg，身高为1.6m，BMI=40÷(1.6×1.6)=40÷2.56=15.625，故选A。
3. 细节理解题：原文提到Tina有多种保持健康的方式（早操、跑步、游泳等），并非“只需要跑步”，故B选项错误；A、C选项与原文表述一致，故选B。
4. 细节理解题：根据BMI区间标准，18.5~23.9为健康状态，22在此区间内，故选B。
5. 主旨大意题：文章先介绍BMI的作用，再通过Tina的例子说明保持健康的多种方法，核心目的是呼吁大家保持健康，故选C。
【答案】
1. B 2. A 3. B 4. B 5. C
【知识点】
阅读理解解题技巧、BMI计算、主旨大意理解
【点评】
本题结合健康生活主题，综合考查细节查找、数学计算、逻辑判断及主旨归纳能力，贴近学生生活实际，能引导学生关注健康，题型设置全面。
【难度系数】
0.4
首先通读全文，明确文章围绕“保持健康”主题，介绍BMI的作用及保持健康的方法。解题时，第1题需定位Tina保持健康的具体做法；第2题运用BMI公式（BMI=体重÷(身高×身高)）计算；第3题需对比选项与原文细节，找出错误表述；第4题根据BMI区间判断身体状态；第5题需梳理文章核心内容，确定写作意图。
【解析】
1. 细节理解题：根据原文第二段“In the morning, she can get up early and do morning exercises. Running and swimming can help her be healthy too.”可知，Tina可通过做早操保持健康，A选项“每周看一次电视”、C选项“晚睡”不符合健康要求，故选B。
2. 计算题：代入BMI公式，体重为40kg，身高为1.6m，BMI=40÷(1.6×1.6)=40÷2.56=15.625，故选A。
3. 细节理解题：原文提到Tina有多种保持健康的方式（早操、跑步、游泳等），并非“只需要跑步”，故B选项错误；A、C选项与原文表述一致，故选B。
4. 细节理解题：根据BMI区间标准，18.5~23.9为健康状态，22在此区间内，故选B。
5. 主旨大意题：文章先介绍BMI的作用，再通过Tina的例子说明保持健康的多种方法，核心目的是呼吁大家保持健康，故选C。
【答案】
1. B 2. A 3. B 4. B 5. C
【知识点】
阅读理解解题技巧、BMI计算、主旨大意理解
【点评】
本题结合健康生活主题，综合考查细节查找、数学计算、逻辑判断及主旨归纳能力，贴近学生生活实际，能引导学生关注健康，题型设置全面。
【难度系数】
0.4
