C
If you go to a fast food restaurant, you will probably see a lot of teenagers. Today, many teenagers are overweight because of their bad eating habits. Most teenagers love food with a lot of fat, oil, salt and sugar. People often call this kind of food "junk food".
But bad eating habits go beyond(远不止）fast food. We find many teenagers eat unhealthily. Some don't have breakfast before they go to school. During the day, some don't have a nice meal for lunch. In a survey at one school, scientists found that over 75% of the students didn't follow a healthy diet. They didn't like vegetables, and many of them didn't like to eat fruit. They liked to eat food with a lot of salt, sugar or fat.
Parents today also worry about their children's health. Some doctors give the following advice:
• Teenagers shouldn't eat too much junk food.
• Teenagers shouldn't eat food with too much salt.
• Teenagers should eat food with less fat, oil and sugar.
• Teenagers need to eat some fruit and vegetables every day. Fruit and vegetables are rich in vitamins(维生素）and have little fat.
• Teenagers need to eat breakfast every day. This is good for the body and the mind.
()23. From the passage, we know "junk food" has a lot of .
A. milk and sugar
B. fruit and sugar
C. vegetables and salt
D. fat and oil
()24. What does the underlined word "overweight" in Paragraph 1 mean in Chinese?
A. 超重的
B. 瘦弱的
C. 强壮的
D. 健康的
()25. In the passage, doctors think that teenagers should eat more .
A. oil and vegetables
B. fat and sugar
C. vegetables and fruit
D. salt and oil
()26. What is the best title for the passage?
A. Bad Habits
B. Junk Food
C. Unhealthy Food
D. Advice on Healthy Eating
D

23.D 24.A 25.C 26.D

【分析】
本题为英语阅读理解题，包含细节理解、词义猜测、主旨大意三类题型，需结合原文对应信息逐一解答：23题定位垃圾食品的成分，24题结合语境猜测词义，25题定位医生的饮食建议，26题总结文章主旨。
【解析】
23题：根据原文第一段“Most teenagers love food with a lot of fat, oil, salt and sugar. People often call this kind of food 'junk food'.”可知，垃圾食品含大量脂肪、油、盐和糖，对应选项D（fat and oil），A、B、C均不符合原文描述，故选D。
24题：第一段提到“many teenagers are overweight because of their bad eating habits”，结合不良饮食习惯的后果，可推测“overweight”意为“超重的”，故选A。
25题：根据医生建议的第四条“Teenagers need to eat some fruit and vegetables every day.”可知，医生建议青少年多吃水果和蔬菜，对应选项C，故选C。
26题：文章先指出青少年的不良饮食习惯，再重点给出医生关于健康饮食的建议，主旨为健康饮食的建议，对应选项D，故选D。
【答案】
23.D 24.A 25.C 26.D
【知识点】
英语阅读理解、细节理解、词义猜测、主旨大意
【点评】
本题围绕青少年健康饮食展开，题型基础，需学生精准定位原文信息，难度适中，适合初中阶段学生练习。
【难度系数】
0.7

Are potatoes important on your dinner table? If so, get ready for a big change! Potatoes are becoming China's staple food(主食) after rice, wheat(小麦) and corn. Using potatoes as a staple can make us healthier. They are good for us in many ways.
Potatoes are nutritious(有营养的). They are rich in vitamin C. A potato's vitamin C is as rich as 10 apples. Potatoes are also low in calories(卡路里)—they have just 75% of the amount of calories that wheat and corn have.
Also, potatoes are easy to grow. People can grow them in almost every part of China. Potatoes don't need much water to grow. China is facing water shortage(不足) problems, so potatoes are a good choice.
Many Chinese people think potatoes are like vegetables. They cook potatoes along with other things. But as a staple, potatoes can be cooked differently. Scientists have found ways to make potato flour(面粉), noodles and other staple foods, just like how we use rice or wheat.
()27. There are kinds of staple food mentioned in the passage.
A. two
B. three
C. four
D. five
()28. We can see from the passage that potatoes .
A. are difficult to grow
B. don't need any water
C. are good for our health
D. don't have any calories
()29. What do scientists try to do with the potatoes?
A. Use potatoes to cook new dishes.
B. Make potatoes taste like real vegetables.
C. Cook potatoes along with rice and wheat.
D. Use potatoes as a staple like noodles and flour.
()30. What's the best title for the passage?
A. Big Changes of Potatoes
B. How to Cook Potatoes
C. The History of Potatoes
D. One New Staple Food

27.C 28.C 29.D 30.D

【分析】
本题为英语阅读理解题，需先通读全文把握主旨，再针对各小题定位原文关键信息解答：
1. 第27题：定位原文第一段关于中国主食的表述，统计提到的主食种类；
2. 第28题：逐一核对选项与原文细节，排除错误选项；
3. 第29题：定位科学家相关的表述，匹配选项内容；
4. 第30题：梳理全文核心内容，确定主旨大意。
【解析】
27题：原文第一段提到“Potatoes are becoming China's staple food after rice, wheat and corn”，可知提到的主食有rice、wheat、corn、potatoes共4种，故选C。
28题：A项原文第三段“potatoes are easy to grow”，错误；B项原文“don't need much water”而非“any water”，错误；C项原文第一段“make us healthier, good for us”，正确；D项原文“low in calories”而非“no calories”，错误，故选C。
29题：原文最后一段“Scientists have found ways to make potato flour, noodles and other staple foods, just like how we use rice or wheat”，对应D选项“Use potatoes as a staple like noodles and flour”，故选D。
30题：全文围绕土豆成为中国新主食展开，A项“大变化”未突出核心，B项“烹饪”、C项“历史”均未提及，故选D。
【答案】
27.C 28.C 29.D 30.D
【知识点】
英语阅读理解、细节理解题、主旨大意题
【点评】
本文是一篇介绍土豆成为中国新主食的说明文，考查学生快速定位原文细节、理解主旨的能力，题目设置贴合基础阅读要求，需仔细核对原文信息避免误判。
【难度系数】
0.7