已知x可以在区间[-2a，3a]（a＞0）上任意取值，则x∈[-a，12a]的概
题型：选择题
问题：
已知x可以在区间[-2a，3a]（a＞0）上任意取值，则x∈[-a，
|
题型：选择题
阅读理解。
All over the world, and for many different reasons, there are millions of people who never eat meat.
These people are called vegetarians. To people who eat meat, being a vegetarian may seem like a very
strange thing. But they won't eat meat for several different reasons.
First, vegetarians have a big health advantage. One of the major health problems in modern world is
too much food, especially in the form of animal fats. Medical study suggests that animal fats, including
butter, quicken the development of cholesterol (胆固醇) in the human body. Too much cholesterol seems
to be part of the cause of heart disease. Most vegetarians have low level of cholesterol. Too much animal
fats also seem to lead to certain kinds of cancer, and vegetarians have less these cancers than people who
eat a lot of meat. Overall, studies comparing the health of vegetarians and meat-eaters show that the
meat-eaters are twice as likely to die of heart disease as vegetarians are.
Better health is one reason that people choose to become vegetarians. Another reason is religion (宗教).
Eating of meat is never allowed in some religions. The largest of these is the Hindu religion, which has about
600 million believers in the world. Although not all Hindus are vegetarian, many are, and there are many
believers of other religions, such as Buddhism and even some Christian religions that also do not eat meat.
Many vegetarians do not eat meat simply because they do not like the taste of it. They have no religious
or other reasons; they just do not like meat. Another important reason that vegetarians give for not eating
meat is the health advantages that were given above. Lastly, there are many people who do not eat meat
because they just do not like the idea of killing animals for food. They believe that life, all life, is valuable and
that we do not have to destroy life to feed ourselves when there are other good sources of food.
1. According to the passage, people choose to be vegetarians for the reasons EXCEPT ________.
A. they think killing is bad and want to stay healthy
B. they are too kind to put the idea of killing animals
C. they live in areas where meat supply is short
D. they shouldn't eat meat because of religious belief
2. Which of the following is true according to Paragraph 2?
A. Vegetarians enjoy a more healthy life than the meat eaters.
B. Heart disease and cancer are caused by too much vegetables.
C. There are twice as many meat-eaters as vegetarians who die of cancer.
D. There are fewer health problems in modern society nowadays.
3. It can be inferred from the passage that ________.
A. being a vegetarian may be a very strange thing
B. vegetarians eat meat on some special occasions
C. most vegetarians believe that life without meat is happy
D. all vegetarians have reasons for their not eating meat