外语
单选题Sugar manufactures have ______.A tried hard to make experiments on their own with sugar on humans and animalsB invested millions of dollars in buying best names of scientists to sell sugar.C hoped to encounter some scientific findings about sugar.D tri
题目
tried hard to make experiments on their own with sugar on humans and animals
invested millions of dollars in buying best names of scientists to sell sugar.
hoped to encounter some scientific findings about sugar.
tried hard to establish public relations in order to open the market for sugar.
相似问题和答案
第1题：
A. from
B. of
C. about
D. on
第2题：
A. some. . . any
B. any. . . some
C. a... some
D. some. . . a
第3题：
A.following
B.next
C.in future
D.to come
第4题：
The factory manufactures a ______ of products. A. variety B. mixture C. quality D. volume
第5题：
sugar coated tablets
sugarcostedtablets：糖衣片,是以蔗糖为主要包衣材料进行包衣而制得的片剂。
第6题：
A、Yes,it is.Thank you
B、Yes,it does.Thank you
C、Yes,I will.Thank you
D、Yes,I do.I like it
第7题：
As for food, experts suggest that______.
A. we should eat less
B. we should never eat meat
C. we should have meals with less salt and sugar
D. we should have meals without salt or sugar
47．答案为C 此题为细节题。本文的最后是专家在饮食方面给人们提出的建议。从句子As for meals， people are advised to eat less salt and sugar。可以得出答案是C。
第8题：
A、whether
B、when
C、how
D、what
第9题：
No Sweet Talk About Sugar
Sugar's proponents call it quick energy, opponents say it's empty calories (卡路里) 。 But to the average person, who consumes a quarter of a pound of it each day, sugar is mostly an irresistibly good taste.In fact, people seem to have an innate "sweet tooth."
Human societies have long equated sweetness with goodness - sweet mystery of life, sweet smell of success, sweetheart - and that enhances (增强;提高) the attraction.But in recent years, sugar has also been singled out as a potential enemy of the healthy life.Cited for such evils as distracting youngsters from more nutritious (营养的) foodstuffs, enhancing obesity (肥胖), ruining teeth and causing diabetes(糖尿病), it has become the most maligned (恶毒的) of the main components of our diet.
Sugar, like starch, is a carbohydrate (碳水化合物).Its many types include sucrose (table sugar refined from sugarcane or beets), lactose (milk sugar), fructose (fruit sugar), glucose (blood sugar), dextrose (右旋糖), maltose(麦芽糖) and galactose (半乳糖).Seventy percent of the sugar in the labels on all the packaged products in your pantry (食品室) and see how many list sugar (or corn syrup) as a main ingredient (成分) 。
Early this century, the average North American consumed about 76 pounds of refined sugar a year, but starches formed two thirds of his dietary carbohydrates.Today, per-capita refined sugar consumption hovers around 95 pounds, and all types of sugar represent more than half the carbohydrate calories.But in relying on sucrose-sweetened processed foods as a main carbohydrate source, we may miss the essential nutrients - fiber, vitamins and minerals - found in other carbohydrate foods like fruits, vegetables and breads.
The body has no physiological need for sucrose that cannot be satisfied by other, more nutritious foods.The body can convert starches to sugar, or use the sugar in fruits and vegetables for energy.In fact, nutrition experts say that even the purported (传说的) need for sugar as quick energy is a myth except in a few rare situations, such as a diabetic in insulin shock.During exercise, the body calls upon its reserve of glycogen (肝糖) (and, if that runs low, fatty acids from the breakdown of triglycerides) to supply the muscles with needed energy.If you eat sugar before exercising, your body simply stores it.
As for sugar's reputed adverse (不利的) health effects, the following can be said on the basis of available evidence:
Obesity, Sugar supplies four calories per gram - about the same as protein and less half that of fat.Excess caloric intake, not sugar, causes obesity.But since calories can be highly concentrated in sugar-sweetened foods, you may eat many more calories than you need of such foods before you feel full or even realize how much you consumed.
Tooth decay.Sugar definitely promotes the development of dental caries.Bacteria in the mouth digest (消化) the sugar on tooth surfaces, and produce acid which eats away the enamel (珐琅).It is the time sugar remains on the teeth, rather than the amount eaten, that makes the difference.To reduce the risk of decay, dentists recommend rinsing your mouth or brushing you teeth after consuming anything sweet, and avoiding sweets between meals.
Diabetes.In diabetes, the pancreas (胰腺) fails to produce enough insulin to clear the blood of excess glucose.Thus, diabetics must curb their intake of sweets lest their blood-sugar levels rise dangerously high.But the important factor in diabetes is controlling body weight.
Heart Disease.The theory that sugar is an important factor in heart disease does not have wide support among experts, who say that fats and cholesterol (胆固醇) are the more likely culprits (罪魁祸首).
Some people have a tendency to develop high blood levels of fatty substances called triglycerides, which may promote atherosclerosis (动脉硬化).They are often advised to reduce their sugar intake, but losing weight is more important.Diets free of sucrose can lower abnormally high triglyceride levels, but they have been found to have little or no effect on triglyceride levels that are acceptable in the first place.
1、What does the word "innate" mean?()
A、born with
B、implanted
C、bad
D、healthy
2、Which of the following statements is NOT true?()
A、There are many types of sugar such as sucrose, lactose, fructose, etc.
B、Sugar can cause many health problems such as obesity, tooth decay and diabetes.
C、Sugar is not nutritious because it doesn't contain fiber, vitamin and mineral.
D、Sugar is physiologically needed by the body and can not be substituted by other substance.
3、"Curb their intake of sweets" can also be referred to as()their intake of sweets.
A、increase
B、decrease
C、limit
D、take
4、Based on the ideas presented in the passage we can conclude that ().
A、there is not available evidence to show sugar's bad effects
B、if you eat a lot of sweet food, you may suffer from obesity, because such food contains a lot of calories
C、to limit sugar intake is the most important thing for the atherosclerosis patient
D、most experts believe that sugar can cause heart disease
5、From the passage, we know().
A、sugar eats away the enamel, thus causing tooth decay
B、the cause for diabetes is the excessive intake of sugar
C、fats and cholesterol have nothing to do with heart disease
D、high level triglycerides may increase the chances of atherosclerosis
第10题：
The Tough Grass That Sweetens Our Lives
Sugar cane was once a wild grass that grew in New Guinea and was used by local people for roofing their
houses and fencing their gardens. Gradually a different variety evolved which contained sucrose（蔗糖）and
was chewed on for its sweet taste. Over time,sugar cane became a highly valuable commercial plant,grown
throughout the world. _________(46)
Sugar became a vital ingredient in all kinds of things ,from confectionery（糖果点心）to medicine , and,
as the demand for sugar grew ,the industry became larger and more profitable.__________(47)Many crops
withered（枯萎）and died,despite growers' attempts to save them ,and there were fears that the health of the
plant would continue to deteriorate.
In the 1960s ,scientists working in Barbados looked for ways to make the commercial species stronger
and more able to resist disease. They experimented with breeding programmes,mixing genes from the wild
species of sugar cane,which tends to be tougher, with genes from the more delicate,commercial type.
___________(48)This sugar cane is not yet ready to be sold commercially,but when this happens,it is
expected to he incredibly profitable for the industry.
____________ (49)Brazil , which produces one quarter of the world's sugar, has coordinated an intema-
tional project under Professor Paulo Arrudo of the Universidade Estaudual de Campinas in Sao Paulo. Teams
of experts have worked with him to discover more about which parts of the genetic structure of the plant are
important for the production of sugar and its overall health.
Despite all the research ,however, we still do not fully understand how the genes function in sugar cane.
___________(50)This gene is particularly exciting because it makes the plant resistant to rust,a disease
which probably originated in India,but is now capable of infecting sugar cane across the world.Scientists
believe they will eventually be able to grow a plant which cannot be destroyed by rust.
A:Since the 1960s,scientists have been analysing the mysteries of the sugar cane'S genetic code.
B:Unfortunately,however,the plant started to become weaker and more prone to disease.
C:The majority of the world'5 sugar now comes firm this particular commercial species.
D:One major gene has been identified by Dr Angelique D'Hont and her team in Montpeller,France.
E:Eventually,a commercial plant was developed which was 5 percent sweeter than before,but also much stronger and less likely to die from disease.
F: Sugar cane is now much more vigorous and the supply of sugar is therefore more guaranteed.
由空后的“Many crops withered（枯萎）and died...”可推知答案为B。
空后提到了“This sugar cane"，空前讲到科学家将野生甘蔗的基因和商业化甘蔗的基因 相混合，所以能填入此空的选项肯定提到了某种实验开发得来的甘蔗，由此并通过观察选项， 即可得出答案。
下文讲的是巴西——世界上四分之一的糖的产地——配合专家进行的甘蔗这种植物 的基因结构方面的研究，故选A。
空后提到“This gene"，空前没提到某一种基因，可见能填入此空的选项应讲到某种基 因，故选D。第6部分：完形填空