JOGGERS CAN INCREASE THEIR DISTANCE________ TWO WEEKS OR SO.A.EACH...

20.Joggers can increase their distance________ two weeks or so.

A.each

B.every

C.another

D. little

Read the following two passages and choose the correct answer to each of the

questions.

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

disease. One egg yolk, in fact, contains a little more than two-thirds of the suggested daily

cholesterol limit. This knowledge has caused 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 lower

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 “designer” eggs. These eggs are produced by

hens that are fed low-fat diets consisting of ingredients such as canola oil, flax, and rice

bran. In spite of their diets, 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 results. It may be that it is not the type of

egg 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’s production of blood

cholesterol. Consequently, while it still makes sense to limit one’s intake of eggs, even

designer eggs, it seems that doing this without regulating dietary fat will probably not help

reduce the blood cholesterol level.