重庆第三十中学高一下期半期英语试题卷本试卷共150分，共12页。考试结束后，将答题卡交回，试卷自己保留。注意事项：1.答题前，考生先将自己的姓名、班级、准考证号码填写清楚。 2.选择题必须使用2B铅笔填涂；非选择题必须使用0.5毫米黑字迹的签字笔书写，字体工整，笔迹清楚。3.请按照题号顺序在各题目的答题区域内作答，超出答题区域书写的答案无效；在草稿纸、试题卷上答题无效。4.作图可先用铅笔画出，确定后必须用黑色字迹的签字笔描黑。5.保持答题卡面清洁，不要折叠、不要弄破、弄皱，不准使用涂改液、修正带、刮纸刀。第一部分 听力（共两节，满分30分）做题时，先将答案标在试卷上，录音结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。第一节 （共5小题，每小题1.5分，满分7.5分）听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。第二部分 阅读理解（共两节，满分40分）第一节（共15小题：每小题2分，满分30分） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。AThe Healthy Habits Survey shows that only about one third of American seniors have correct habits. Here are some findings and expert advice.1. How many times did you brush your teeth yesterday?Finding: A full 33% of seniors brush their teeth only once a day.Step: Remove the 300 types of bacteria in your mouth each morning with a battery-operated toothbrush. Brush gently for 2 minutes, at least twice a day.2. How many times did you wash your hands or bathe yesterday?Finding: Seniors, on average, bathe fewer than 3 days a week. And nearly 30% wash their hands only 4 times a day-half of the number doctors recommend.Step: We touch our faces around 3,000 times a day-often inviting germs（病菌）to enter our mouth, nose, and eyes. Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.3. How often do you think about fighting germs?Finding：Seniors are not fighting germs as well as they should.Step：Be aware of germs. Do you know it is not your toilet but your kitchen sponge（海绵）that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.21. What is found out about American seniors?A. Most of them have good habits.B. Nearly 30% of them bathe three days a week.C. All of them are fighting germs better than expected.D. About one third of them brush their teeth only once a day.22. Doctors suggest that people should wash their hands_. A. twice a day B. three times a day C. four times a dayD. eight times a day 23. Which of the following is true according to the text ?A. We should keep from touching our faces.B. There are less than 300 types of bacteria in the mouth.CA kitchen sponge can carry more germs than a toilet.D. We should wash our hands before touching a door handle.24. The text probably comes from_ .A. a guide bookB. a popular magazineC. a book reviewD .an official documentBMany animals recognize their food because they see it. So do humans. When you see an apple or a piece of chocolate you know that these are things you can eat. You can also use other senses（感官）when you choose your food. You may like it because it smells good or because it tastes good. You may dislike some types of food because they do not look, smell or taste very nice. Different animals use different senses to find and choose their food. A few animals depend on only one of their senses, while most animals use more than one sense.Although there are many different types of food, some animals spend their lives eating only one type. The giant panda eats only one particular type of bamboo. Other animals eat only one type of food even when given the choice. A kind of white butterfly will stay on the leaves of a cabbage, even though there are plenty of other vegetables in the garden. However, most animals have a more varied diet. The bear eats fruits and fish. The fox eats small animals, birds and fruits. The diet of these animals will be different depending on the season. Humans have a very varied diet. We often eat food because we like it but not because it is good for us. In countries such as France and Britain, people eat foods with too much sugar. This makes them overweight, which is bad for their health. Eating too much red meat and animal products, such as butter, can also be bad for the health. Choosing the right food, therefore, has become an area of study in modern life. 25. We can infer from the text that humans and animals _.A. depend on one sense in choosing food B. are not satisfied with their food C. choose food in similar ways D. eat entirely different food26. Certain animals change their choice of food when _.A. the season changes B. the food color changesC. they move to different places D. they are attracted by different smells27. We can learn from the last paragraph that _. A. food is chosen for a good reason B. French and British food is goodC. some people have few choices of food D. some people care little about healthy dietCI found out one time that doing a favor for someone could get you into a lot of trouble. I was in the eighth grade at the time, and we were having a final test. During the test, the girl sitting next to me whispered something, b