课时作业25 First aid
Ⅰ.阅读理解
Saving the planet one plateful at a time does not mean cutting back on meat, according to new research: the trick may be to switch our diet to insects.
The raising of livestock such as cows, pigs and sheep occupies twothirds of the world's farmland and produces 20% of all the greenhouse gases driving global warming. As a result, the United Nations wants to reduce the amount of meat we eat and the search is on for alternatives.
Professor Arnold van Huis says eating insects has advantages. “There is a meat crisis,” he said. “The world population will grow from six billion now to nine billion by 2050 and we know people are consuming more meat. Twenty years ago the average was 20kg, it is now 50kg, and will be 80kg in 20 years. If we continue like this we will need another Earth.”
“Most of the world already eats insects,” he points out. “It is only in the western world that we don't. Psychologically we have a problem with it. I don't know why, as we eat shrimps, which are very comparable.”
The advantages of this diet include insects' high levels of protein, vitamin and mineral content. Being coldblooded, insects change plant matter into protein extremely efficiently. In addition, the health risks are lower. He acknowledges that in_the_west_eating_insects_is_a_hard_sell,“It is very important how you prepare them, you have to do it very nicely, to overcome the yuk factor.”
Durst helped set up an insect farming project FAO project in Laos. This involves transferring the skills of the 15,000 household locust farmers in Thailand across the border. “There were some supporters of a bigger dairy industry in Laos to improve a calcium deficiency, ”says Durst.“But this is crazy when most Asians are lactose (乳糖) intolerant.” Locusts and crickets are calciumrich and 90% of people in Laos have eaten insects at some point. Durst says the project will be to increase the eating of insects where this is already accepted but has been in decline due to western cultural influence.
1.According to Van Huis, westerners don't eat insects because ________.
A.there are fewer nutriments in insects
B.they can't overcome a mental barrier
C.insects aren't as delicious as shrimps
D.insects don't have much meat themselves
2.The underlined part in the passage may mean ________.
A.insects that can be eaten don't sell well in eastern countries
B.there are few eating insects in the markets of western countries
C.it is difficult for westerners to accept the idea of eating insects
D.selling eating insects in the west is hard to make a lot of money
3.It can be inferred from what Durst said that ________.
A.Laos is where locusts and cricket are eaten most
B.people in Laos are good at cooking eating insects
C.eating insects in Laos is much more popular at present
D.milk isn't suitable for most Asian people to increase calcium
4.What might be the most suitable title for the passage?
A.Insects Are the Future of Protein
B.Insects Are Rich in Calcium
C.Insects Are the Target of Eating
D.Insects Are the Alternative for Food
答案与解析
这是一篇说明文,说的是环保新理念。联合国粮农组织日前郑重宣布,用昆虫代替牛羊肉可满足全球人口增长带来的食物供给压力,还可减少温室气体排放。
1.B 细节理解题。根据第四段倒数第二句可知,西方人不吃昆虫的原因是有心理障碍。
2.C 句意理解题。从第四段西方人不吃昆虫,所以对他们来说接受吃昆虫的观点是困难的。
3.D 推理判断题。根据最后一段倒数第三句可知,亚洲人不适应乳糖,所以利用牛奶来增加人们所需的钙的想法是不合适的。
4.A 主旨大意题。本文主要功能介绍了随着地球上的人类越来越多,人们吃肉越来越多,会造成地球大气变暖,而假如人们吃昆虫的话,就会解决这一问题,以及吃昆虫的好处和一些研究等,所以A符合主题。
Ⅱ.阅读填句
A major source of teen stress is school exams, and test anxiety is not uncommon. When you recognize your teen is under stress, how can you help your teen stay calm before an exam?
Be involved. You need to be involved in your teen's work. __1__ What your teen looks for is your presence—to talk, to cry, or simply to sit with her quietly. Communicate openly with your teen. Encourage your teen to express her worries and fears, but don't let her focus on those fears.
Help her get organized. __2__ Together, you and your teen can work out a timetable in which she can study for what she know will be on the test.
Provide a quiet setting. Help your teen set up a quiet place to study and protect her privacy. Give her a nutritious diet. It is important for your teen to eat a healthy, balanced diet during exam time to do her best. __3__ If this happens, encourage your teen to eat light meals or sandwiches. A healthy diet, rather than junk food, is best for reducing stress.
__4__ Persuade your teen to get some sleep and/or do something active when she needs a real break from studying. Making time for relaxation, fun, and exercise is important in reducing stress. Help your teen balance her time so that she will feel comfortable when taking time out from studying to spend time with friends or on rest.
Show a positive attitude. __5__ Your panic, anxiety and blame contribute to your teen's pressure. Make your teen feel accepted and valued for her efforts. Most importantly, reassure your teen that things will be all right, no matter what the results are.
A.Parents' attitude will dictate their teen's emotions.
B.Exam stress can make some teens lose their appetite.
C.They will only make the situation worse.
D.Encourage your teen to relax.
E.The best thing is simply to be there.
F.Help your teen think about what she has to study and plan accordingly.
G.Your teen may also make negative comments about herself.
答案与解析
本文是一篇说明文,作者就如何克服考试前的紧张情绪提出了一些建议。
1.B 本空后面这句话的大意:这一点看似简单,但是如果你确信这一点,你就没有那么多担心的理由了。由此可推断出此处选B,表示确保已经为考试作好了准备。
2.F 根据前一句“Get enough sleep the night before the test.”可知,本段与睡眠有关,结合选项可知应选F。如果睡眠充足,你的大脑就会更好地工作。
3.A 本段中的“listen carefully to find out what the teacher is saying”和“Make sure you know what's expected of you.”暗示此处选A。A项为本段的主题句。
4.D 根据上一句“不要被某个难题所困”可知此处选D。此处表示“相反,要用最好的方式答题”,这与下面一句“或者跳过那个你不会的题,等答完其他的题后再来处理”相呼应。
5.G 根据语境可知,拿到试卷要先看一遍,如果遇到不清楚的地方,要询问老师。
Ⅲ.语法填空
Some kids may assume that college is very much like their regimented (严格控制的) high school. But __1__ (actual) there are lots freedom at college: There are much more latitude (回旋余地,自由) in __2__ (choose) courses to take, __3__ students can focus primarily on subjects that interest them. Their schedule will vary widely, too. Some days they may have no courses until noon. Most courses may only meet three times a week. These are interesting details that not every youngster is aware __4__.
In __5__ (add), students will meet many, many new friends. They'll be in a community, __6__ almost everyone is __7__ (rough) the same age. College typically feature scores of clubs, sports, and other activities and thus students aren't likely to be bored. Instead of being out in the working world, they'll be among new friends, __8__ (take) many courses that interest them and enjoying a rich __9__ (society) life.
Another compelling point is financial. According to the estimated figures, those who have received a college education will make to one's earning power. Obviously a good job today requires __10__ least a college education.
答案与解析
1.actually actually 实际上。
2.choosing 介词后跟动名词形式作宾语。
3.and 该空表并列顺承关系,故用 and。
4.of be aware of 知道。
5.addition in addition 另外。
6.where 先行词为 community,定语从句中缺状语,故用 where 引导。
7.roughly roughly 大约。
8.taking 现在分词作伴随状语。
9.social 形容词作定语。
10.at at least 至少。
Ⅳ.短文改错
Mr. Johnson is a hardworking teacher. Every day, he spends too much time with his work. With little sleep and hardly any break, so he works from morning till night. Hard work have made him very ill. “He has ruined his healthy. We are worried about him.” That is which other teachers say. Yesterday afternoon, I paid visit to Mr. Johnson. I was eager to see him, but outside her room I stopped. I had to calm myself down. Quietly I step into the room. I saw him lying in bed, looking at some of the picture we had taken together. I understood that he missed us just as many as we missed him.
答案
Ⅴ.书面表达
某英文网站发起了论家庭饲养宠物的论坛,请你根据以下要点并结合你的感知,写一篇短文,参与该论坛的讨论。
1.饲养宠物的流行情况;
2.饲养宠物的好处与坏处;
3.你家饲养的宠物的情况;
4.饲养宠物最值得注意的地方。
注意:
1.词数:100左右;
2.题目已给出;
3.可以适当增加细节,以使行文连贯;
4.文中不能出现考生真实姓名和学校名称。
Keeping Pets
________________________________________________________________________________________________________________________
范文
Keeping Pets
Nowadays, more and more families choose to spend much money and energy raising pets. Some pets even enjoy the same status as a real family member. Some people find it fun to raise a pet. They think the animal is friendly and interesting. It can accompany them and make them happy. However, it takes much time and energy to keep a pet. Some animals carry unknown diseases. It can be a danger to the animal master.
As for my family, we prefer a dog than any other animal. We think it is smarter, and it needs less food and space than others.
To keep a pet, you must make sure you have much spare time. At the same time, make sure the animal is safe in health and it does not disturb the neighbours.
牛津实用英语语法:85 whoever,whichever,whatever,whenever,
牛津实用英语语法:121 have+宾语+现在分词
牛津实用英语语法:144 must和have to的各种形式
牛津实用英语语法:147 need not,must not和 must
牛津实用英语语法:119 have+宾语+过去分词
牛津实用英语语法:125 do用做助动词
牛津实用英语语法:98 介词后的动名词
牛津实用英语语法:95 above, over, under, below, beneath等
牛津实用英语语法:135 can表示可能
牛津实用英语语法:140 should的各种形式
牛津实用英语语法:131 请求许可
牛津实用英语语法:143 ought/should与完成式连用
牛津实用英语语法:136 can和 be able的各种形式
牛津实用英语语法:94 at,in; in,into; on,onto
牛津实用英语语法:152 needn't+完成式
牛津实用英语语法:130 could或 was/were allowed to
牛津实用英语语法:128 can用来表示许可
牛津实用英语语法:124 形式
牛津实用英语语法:117 it is和there is的比较
牛津实用英语语法:122 have意指possess(拥有)
牛津实用英语语法:120 had better+不带to的不定式
牛津实用英语语法:139 ought的各种形式
牛津实用英语语法:146 need not和 must not用于现在时和将来时
牛津实用英语语法:138 could+完成式
牛津实用英语语法:107 助动词:形式与句型
牛津实用英语语法:103 各种时态的否定形式
牛津实用英语语法:137 can/am able,could/was able
牛津实用英语语法:116 there is/are/was/were等
牛津实用英语语法:132 may/might表示可能
牛津实用英语语法:134 could替代may/might的用法
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