第四部分:阅读理解(第31~45题,每题3分,共45分)
下面有3篇短文,每篇短文后有5道题。请根据短文内容,为每题确定1个最佳选项
第一篇
Genetic Engineering
Genetic engineering began when the DNA molecule(分子), the most basic unit of life, was first described in 1953 by James Watson and Francis Crick. An understanding of DNA led to the altering of normal cell reproduction. Experiments with altering human cells began in 1970. In one of the first experiments, patients were injected with a virus that would produce a life-saving enzyme, but their bodies would not accept it. In 1980 patients with a rare but fatal blood disease were injected with a purified gene that was cloned through DNA technology. Another failure.
Genetic engineering got a legal boost(激励) in 1980. The U.S. Supreme Court said that a patent could be granted on a genetically engineered oil-eating bacterium(细菌). This bacterium would help clean up oil spills. The ruling encouraged companies to invent new life forms, and three important medical products were quickly developed.
l Human interferon(干扰素)-- a possible solution to some cancers and viral disease. A newly engineered bacterium produced human interferon as a by-product. This new product reduced the cost of interferon.
l Human growth hormone-- for children whose bodies do not grow to normal height. An expensive growth hormone(荷尔蒙) was previously produced from human cadavers, but by changing the genetic make-up of the single-cell bacterium E. coli, and affordable growth hormone could be produced.
l Human insulin(胰岛素)-- for the treatment of diabetes. People with diabetes used to rely on a beef- or pork-based product until 1982. Now insulin can be manufactured by genetically altered bacteria.
Advances in genetic engineering have continued, though they constantly must be weighted against the safety of procedures. There is clearly much more to discover.
31. This passage is mainly about
A. the effects of altering cells.
B. the human growth hormone.
C. insulin resistance.
D. U.S. Supreme Court rulings.
【答案】:A
32. Genetic enginerring may be defined as
A. the altering of normal cell reproduction
B. a branch of applied chemistry.
C. a procedure that holds little promise.
D. a study on life-saving enzymes.
【答案】:A
33. According to the passage, human interferon
A. is a hormone that causes disease.
B. could be used to treat cancer.
C. is a viral disease
D. has been cured
【答案】:B
34. In this passage, the three genetically engineered medical products are presented
A. as a process.
B. in a simple list.
C. from earliest to latest.
D.as a story.
【答案】:B
35. In the last paragraph, the word weighed has the cloest meaning with
A. had great influence
B. became a burden.
C. considered carefully.
D. measured accurately.
【答案】:C
第二篇
Puerto Rican Cuisine(菜肴)
Puerto Rico, a Caribbean (加勒比海区) island rich in history and remarkable natural beauty, has a cuisine all its own. Immigration(移民) to the island has helped to shape its cuisine, with people from all over the world making various contributions to it. However, before the arrival of these immigrants, the Taino people lived on the island of Puerto Rico. Taino cuisine included such foods as rodents (啮齿动物), fresh shellfish and fish fried in corn oil.
Many aspects of Taino cuisine continue today in Puerto Rican cooking, but it has been heavily influenced by the Spanish, who invaded Puerto Rico in 1508, and Africans, who were initially brought to Puerto Rico to work as slaves. Taino cooking styles were mixed with ideas brought by the Spanish and Africans to create new dishes. The Spanish extended food choices by bringing cattle, pigs, goats, and sheep to the island. Africans also added to the islands food culture by introducing powerful, contrasting tastes in dishes. In fact, much of the food Puerto Rico is now famous for - coffee, coconuts, and oranges - was actually imported by foreigners to the island.
A common assumption many people make about Puerto Rican food is that it is very spicy(辛辣的). lts true that chili peppers are popular; aij caballero in particular is a very hot chili pepper that Puerto Ricans enjoy. However, milder(微辣的) tastes are popular too, such as sofrito. As the base of many Puerto Rican dishes, sofrito is a sauce made from chopped onions, green bell peppers, sweet chili peppers, and a handful of other spices. It is fried in oil and then added to other dishes.
36、who lived in Puerto Rico first
A.the Africans
B.the Spanish
C.the Americans
D.the Taino people
【答案】:D
37、In the first paragraph the word it refers to
A.immigration
B.Caribbean history
C.the islands natural beauty
D.Puerto Rican cuisine
【答案】:D
38、what is the main idea of the second paragraph?
A.Taino dishes are important in Puerto Rican cooking
B.Food imported by foreigners isnt really Puerto Rican
C.Puerto Rican cooking has many outside influences
D.African foods have probably had the most influence
【答案】:C
39、How is sofrito used?
A.It is eaten before meals
B.It is added to other dishes
C.It is used where foods are too spicy
D.It is eaten as a main dish
【答案】:B
40、 which of the following is NOT true?
A.softito is a type of extremely spicy food
B.Many people think Puerto Rican food is spicy
C.Puerto Rican cuisine uses a lot of chili peppers
D.Aij caballero is a type of chile pepper
【答案】:A
第三篇
Eat healthy
Clean your plate! and Be a member of the clean-plate club1! Just about every kid in the US has heard this from a parent or grandparent. Often, its accompanied by an appeal: Just think about those starving orphans in Africa!2 Sure, we should be grateful for every bite of food. Unfortunately, many people in the US take too many bites3. Instead of staying clean the plate, perhaps we should save some food for tomorrow.
According to news reports, US restaurants are partly to blame for the growing bellies. A waiter puts a plate of food in front of each customer, with two to four times the amount recommended by the government, according to a USA Today story.4 Americans traditionally associate quantity with value and most restaurants try to give them that. They prefer to have customers complain about too much food rather than too little.
Barbara Rolls, a nutrition professor at Pennsylvania State University; told USA Today that restaurant portion sizes began (o grow in the 1970s, the same time that the American waistline began to expand.
Health experts have tried to get many restaurants to serve smaller portions. Now, apparently, some customers are calling for this too. The restaurant industry trade magazine QSR reported last month that 57 percent of more than 4,000 people surveyed believe restaurants serve portions that are too large; 23 percent had no opinion; 20 percent disagreed. But a closer look at the survey indicates that many Americans who cant afford fine dining still prefer large portions. Seventy percent of those earning at least $150,000 per year prefer smaller portions; but only 45 percent of those earning less than $25,000 want smaller.
Its not that working class Americans dont want to eat healthy. Its just that, after long hours at low-paying jobs, getting less on their plate hardly seems like a good deal.5 They live frompaycheck to paycheck, happy to save a little money for next years Christmas presents.
41、Parents in the United States tend to ask their children
A.not to waste food at meals
B.to save food for tomorrow
C.to wash the dishes clean
D.not to eat too much at meals
【答案】:A
42、American restaurants serve large portions because Americans
A.have big bellies
B.value quantity
C.want enough nutrition
D.are mostly rich
【答案】:B
43、what happened in America in the 1970S?
A.The restaurants began to serve smaller portions
B.Health experts advised people to eat less
C.May American tried to get slim
D.the America waistline started to expand
【答案】:D
44、what does the survey indicate?
A.20 percent Americans want smaller portions
B.57 percent Americans earn $150.000 per year
C.Low-income American prefer large portions
D.23 percent Americans earn less than $25.000per year
【答案】:C
45、which of the following is NOT true of walking class Americans?
A.they live from paycheck to paycheck
B.they dont have the habit of saving money
C.they work long hours
D.the want to be healthy eaters
【答案】:B
羽毛球中韩女双涉嫌打假球 国际羽联已展开调查
十二星座父亲—浓浓的父爱
奥运选手饮食大揭密:运动员吃什么?
如何解决城市能源供应难题?
难以预料的实体书借阅经济
美国国旗被吹走:伦敦奥运又现国旗风波
电力短缺 印度大国崛起中的阿喀琉斯之踵
拿奥运金牌奖金:各国金牌得主奖金大曝光
奥林匹克催生英语学习热潮
能让我们永葆年轻的5件事情
年轻运动员更适合奥运比赛么?
你知道奥运哪个项目收视率最高吗?
奥运品牌保护过度了?
英国76岁书店主人:我要订做奖牌送给第四名得主
个性化网购价 你的钱包有多鼓?
十二星座喜欢的约会风格
中国田径运动员资料 刘翔(男子110米栏)
新西兰选手被母亲判犯规 找教练父亲抗议
伦敦奥运又有选手被取消比赛资格
宅神作:真实版机器人Wall-E
私奔情侣秘密结婚 却遭报纸意外登照曝光
调查:美国教练是否应该向叶诗文道歉?
越来越多的男士接受注射和整容
上下班同行有利于婚姻美满?
奥运会开幕式志愿者变卖表演道具惹众怒
生活中总会遇到的7种讨厌的人
百米飞人大战 博尔特被扔瓶子
世界上最不爱运动国家排行榜:英国位列第八
空中客车杀入美国本土市场
12各星座需留意的身体部位
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |