Although they are an inexpensive su

Although they are an inexpensive supplier of vitamins, minerals, and high-quality protein, eggs also contain a high level of blood cholesterol, one of the major causes of heart diseases. One egg yolk, in fact, contains a little more than two-thirds of the suggested daily cholesterol limit. This knowledge has driven egg sales to plummet in recent years, which in turn has brought about the development of several alternatives to eating regular eggs. One alternative is to eat substitute eggs. These egg substitutes are not really eggs, but they look somewhat like eggs when they are cooked. They have the advantage of having low cholesterol rates, and they can be scrambled or used in baking. One disadvantage, however, is that they are not good for frying, poaching, or boiling. A second alternative to regular eggs is a new type of egg, sometimes called 慸esigner? eggs. These eggs are produced by hens that are fed low-flat diets consisting of ingredients such as canola oil, flax, and rice bran. In spite of their diet, however, these hens produce eggs that contain the same amount of cholesterol as regular eggs. Yet, the producers of these eggs claim that eating their eggs will not raise the blood cholesterol in humans.
Egg producers claim that their product has been portrayed unfairly. They cite scientific studies to back up their claim. And, in fact, studies on the relationship between eggs and human cholesterol levels have brought mixed result. It may be that it is not the type of eggs that is the main determinant of cholesterol but the person who is eating the eggs. Some people may be more sensitive to cholesterol derived from food than other people. In fact, there is evidence that certain dietary fats stimulate the body抯 production of blood cholesterol. Consequently, while it still makes sense to limit one抯 intake of eggs, even designer eggs, it seems that doing this without regulating dietary fat will probably not help reduce the blood cholesterol level.
Question 45: What is the main purpose of the passage?
A.牋牋 To introduce the idea that dietary at increases the blood cholesterol level
B.牋牋 To make people know about the relationship between eggs and cholesterol
C.牋? To persuade people that eggs are unhealthy and should not be eaten
D.牋? To convince people to eat 慸esigner? eggs and egg substitutes.牋牋牋牋牋牋
Question?46: According to the passage, which of the following is a cause of heart diseases?
A. minerals牋牋牋? B. cholesterol牋牋? C. canola oil牋牋牋牋牋 D. vitamins
Question?47: What has been the cause for changes in the sale of eggs?
A. increasing price牋 B. decreased production
C. dietary changes in hens牋? 牋 D. concerns about cholesterol
Question 48: What is meant by the phrase 憁ixed result??
A. The result are blended? B. The result are a composite of things
C. The result are inconclusive牋牋牋牋牋牋牋牋牋 D. The result are mingled together
Question?49: According to the author, which of the following may reduce blood cholesterol?
A. reducing egg intake but not fat intake牋牋 B. increasing egg intake and fat intake
C. decreasing egg intake and fat intake牋牋牋? D. increasing egg intake but not fat intake
Question 50: Which of the following could best replace the word 憇omewhat??
A. in fact牋牋牋? B. a little牋牋? C. indefinitely牋牋牋牋牋 D. a lot
Question 51: According to the passage, one yolk contains approximately what fraction of the suggested daily limit for human consumption of cholesterol?
A. 3/4牋牋牋? B. 2/3牋牋? C. 1/2牋牋牋牋牋 D. 1/3
Question 52: The word 憄ortrayed? could best be replaced by which of the following?
A. studied牋牋牋? B. destroyed牋牋? C. tested牋牋牋牋牋 D. described
Question 53: What is the meaning of 慴ack up??
A. reverse牋牋牋? B. advance牋牋? C. block牋牋牋牋? D. support
Question 54:According to the passage, egg substitutes cannot be used to make any of the following types of eggs EXCEPT____.?
A. boiled牋牋牋? B. poached牋牋? C. scrambled牋牋牋牋牋 D. fried