sp; A) seem to be difficult to satisfy
B) are free to express diverse opinions
C) are less effective in making decisions
D) find it easier to reach agreement
Questions 36 to 40 are based on the following passage:
Imagine eating everything delicious you want - with none of the fat. That would be great, wouldn't it?
New “fake fat” products appeared on store shelves in the United States recently, but not everyone is happy about it. Makers of the products, which contain a compound called olestra, say food manufacturers can now eliminate fat from certain foods. Critics, however, say the new compound can rob the body of essential vitamins and nutrients (营养物) and can also cause unpleasant side effects in some people. So it's up to decide whether the new fat-free products taste good enough to keep eating.
Chemists discovered olestra in the late 1960s, when they were searching for a fat that could be digested by infants more easily. Instead of finding the desired fat, the researchers created a fat that can't be digested at all.
Normally, special chemicals in the intestines (肠)“grab” molecules of regular fat and break them down so they can be used by the body. A molecule of regular fat is made up of three molecule of substances called fatty acids.
The fatty acids are absorbed by the intestines and bring with them the essential vitamins A, D, E, and K. When fat molecules are present in the intestines with any of those vitamins, the vitamins attach to the molecules and are carried into the bloodstream.
Olestra, which is made from six to eight molecules of fatty acids, is too large for the intestines to absorb. It just slides through the intestines without being broken down. Manufacturers say it's that ability to slide unchanged through the intestines that makes olestra so valuable as a fat substitute. It provides consumers with the taste of regular fat without any bad effects on the body. But critics say olestra can prevent vitamins A, D, E, and K from being absorbed. It can also prevent the absorption of carotenoids (类胡萝卜素), compounds that may reduce the risk of cancer, heart disease, etc.
Manufacturers are adding vitamins A, D, E, and K as well as carotenoids to their products now. Even so, some nutritionists are still concerned that people might eat unlimited amounts of food made with the fat substitute without worrying about how many calories they are consuming.
36. We learn from the passage that olestra is a substance that_______.
A) contains plenty of nutrients
B) renders foods calorie - free while retaining their vitamins
C) makes foods easily digestible
D) makes foods fat - free while keeping them delicious
37.The result of the search for an easily digestible fat turned out to be_______.
A) commercially useless B) just as anticipated
C) somewhat controversial D) quite unexpected
38.Olestra is different from ordinary fats in that_______.
A) it passes through the intestines without being absorbed
B) it facilitates the absorption of vitamins by the body
C) it helps reduce the incidence of heart disease
D) it prevents excessive intake of vitamins
39.What is a possible negative effect of olesira according to some critics?
A) It may impair the digestive system.
B) It may affect the overall fat intake.
C) It may increase the risk of cancer.
D) It may spoil the consumers' appetite.
40.Why are nutritionists concerned about adding vitamins to olesira?
A) It may lead to the over - consumption of vitamins.
B) People may be induced to eat more than is necessary.
C) The function of the intestines may be weakened.
D) It may trigger a new wave of fake food production.
PartⅢ Vocabulary （20 minutes）
Directions: There are 30 incomplete sentences in this part. For each sentence th ere are four choices marked A), D), C) and D). Choose the ONE that best complete s the sentence. Then mark the corresponding letter on the Answer Sheet with a si ngle line through the centre.
41.The doctors don't _______ that he will live much longer.
A) articulate B) anticipate C) manifest D) monitor
42.I suggest we put the scheme into effect, for it is quite_______.
A) eligible B) sustainable C) probable D) feasible
43.The old gentleman was a very ________ looking person, with grey hair and gold
spectacles.
A) respectful B) respected C) respective D) respectable
44.This book is expected to _______ the best - seller lists.
A) promote B) prevail C) dominate D) exemplify
45.That part of the city has long been ________ for its street violence.
A) notorious B) responsible C) historical D) illegal
46.Under the guidance of their teacher, the pupils are building a model boat_______
by steam.
A) towed B) pressed C) tossed D) propelled
47.Having finished their morning work, the clerks stood up behind their desks,
________themselves.
A) expanding B) stretching C) prolonging D) extending
48.England's team, who are now superbly fit, will be doing their best next week
to ________ themselves for last year's defeat.
A) revive B) retort C) revenge D) remedy
49.If you want to get into that tunnel, you first have to _______ away all the
rocks.
A) haul B) transfer C) repel D) dispose
50.It took us only a few hours to _______the paper off all four walls.
A) shear B) scrape C) stroke D) chip
51.The famous scientist _______his success to hard work.
A) imparted B) granted C) ascribed D) acknowledged
52.It is difficult to _______of a plan to end poverty.
A) speculate B) conceive C) ponder D) reckon
53.Now the cheers and applause _______in a single sustained roar.
A) mingled B) concentrated C) assembled D) permeated
54.Improved consumer confidence is ________ to an economic recovery.
A) crucial B) subordinate C) cumulative D) satisfactory
55.Although the body is made up of many different tissues, these tissues are
arranged in an _______ and orderly fashion.
A) incredible B) intricate C) internal D) initial
56.If you work under a car when repairing it, you often get very_______.
A) waxy B) slippery C) sticky D) greasy
57.The damage to his car was_______; therefore, he could repair it himself.
A) considerable B) appreciable C) negligible D) invisible
58.My sister is quite _______ and plans to get an M. A. degree within one year.
A) aggressive B) enthusiastic C) considerate D) ambitious
59.The manager tried to wave aside these issues as _______ details that would be
settled later.
A) versatile B) trivial C) preliminary D) alternate
60.His_______was telling him that something was wrong.
A) intuition B) hypothesis C) inspiration D) sentiment
61.This book is about how these basic beliefs and values affect important _______
of American life.
A) fashions B) frontiers C) facets D) formats
62.Parents often faced the _______上一页 [1] [2] [3] [4] [5] 下一页 |
