C 热考内容 跨学科 KEY→P377
范畴:人与自然 主题:自然科普 体裁:说明文 难度:★★★★ 建议用时:8分钟 评价:/5
Buzz, buzz ... It's the season of ice cream, beach trips and ... mosquito bites! These tiny
英语嗨吧
biters aren't just annoying; they can also spread dangerous diseases like malaria and dengue(登革热). But do you know that mosquitoes have their favorites among us?
A popular belief is that mosquitoes might aim at you because they like your blood type. Some studies say mosquitoes prefer people with type O blood. In one study, 83.3% of mosquitoes chose type O, while only 46.5% preferred type A. But experts say more research is needed to find out how true this is.
Another thing that makes you a mosquito magnet(有吸引力的人) is the air you breathe out. Mosquitoes can smell the carbon dioxide in it. They can sense it from about 50 meters away. People who are bigger or breathe harder after exercise are easier aims for mosquitoes.
Your clothing color matters, too. Mosquitoes are visual hunters. But they see dark colors like black and navy(海军蓝) more easily than light colors. Studies have found that mosquitoes are most attracted to black.
Mosquitoes are also drawn to certain body smells. They love the smell of acid(酸) on our skin. Genes and exercise can affect how much acid the body gives off. Mosquitoes are so sensitive(敏感的) to this smell that even perfumes can't hide it.
So, how can we stay safe? Wear light-colored clothes, especially outside. Use bug spray, especially after sweating. And try not to exercise outdoors in the early evening when mosquitoes usually come out. With these simple tips, we can enjoy summer with fewer bites and more smiles.
()1. What blood type do some studies say mosquitoes prefer?
A. Type A. B. Type B. C. Type O. D. Type AB.
()2. How far away can mosquitoes sense the carbon dioxide in the air people breathe out?
A. About 30 meters. B. About 50 meters.
C. About 70 meters. D. About 90 meters.
()3. From the passage, we can infer that mosquitoes are more active at .
A. 8 a.m. B. 11 a.m. C. 6 p.m. D. 11 p.m.
()4. 新考法·出处推断 Where is this passage most probably taken from?
A. A storybook. B. A science magazine.
C. A fashion magazine. D. An advertisement.
()5. What is the main idea of this passage?
A. Mosquitoes can spread dangerous diseases.
B. Different ways to protect ourselves from mosquitoes.
C. Where mosquitoes come from and how they find people to bite.
D. Why mosquitoes prefer some people and how to stay away from their bites.

1~5 C B C B D
本文主要介绍了蚊子偏爱某些人的原因和避免被蚊子叮咬的建议。
1. C 细节理解题。根据“Some studies say mosquitoes prefer people with type O blood.”可知,一些研究表明蚊子偏爱O型血。
2. B 细节理解题。由“Mosquitoes can smell the carbon dioxide in it. They can sense it from about 50 meters away.”可知,蚊子能在约50米远的地方感知到人们呼出的二氧化碳。
3. C 推理判断题。由“And try not to exercise outdoors in the early evening when mosquitoes usually come out.”可知,蚊子通常在傍晚时分出现。
4. B 出处推断题。本文主要介绍了蚊子喜欢叮咬某些人的原因以及预防蚊子叮咬的方法,属于科普类内容,故最有可能出自科学杂志。
5. D 主旨大意题。短文介绍了蚊子偏爱某些人的原因并给出了避免被蚊子叮咬的建议。

【分析】
本题为科普类英语阅读理解题，共5道小题，涵盖细节理解、推理判断、出处推断、主旨大意题型。解题思路如下：① 先明确每道题的题干类型与关键词，带着关键词回原文定位对应内容；② 细节题直接比对原文与选项信息；③ 推理题需结合原文隐含信息推导；④ 出处题根据文章体裁判断来源；⑤ 主旨题梳理全文核心内容，匹配选项。
【解析】
1. 细节理解题：根据原文第二段“Some studies say mosquitoes prefer people with type O blood.”，可知部分研究表明蚊子偏爱O型血，故选C。
2. 细节理解题：根据原文第三段“They can sense it from about 50 meters away.”，可知蚊子能感知到约50米外的二氧化碳，故选B。
3. 推理判断题：根据原文最后一段“try not to exercise outdoors in the early evening when mosquitoes usually come out.”，傍晚对应6 p.m.，可推断蚊子在傍晚活跃，故选C。
4. 出处推断题：文章围绕蚊子叮咬偏好的科普内容展开，属于科学类文章，最可能出自科学杂志，故选B。
5. 主旨大意题：全文介绍蚊子偏爱某些人的原因，并给出防叮咬的建议，对应选项D，故选D。
【答案】
1~5 C B C B D
【知识点】
英语阅读理解 细节理解题 主旨大意题
【点评】
本文是一篇关于蚊子叮咬偏好的科普说明文，题目设置贴合初中英语阅读理解的常见考点，需学生具备快速定位原文信息、逻辑推理及概括主旨的能力，整体难度适中。
【难度系数】
0.4