问题 选择题

目前人们已经制造出“基因鱼”、“基因猪”等新型物种,将来还会有意识地制造出更多的物种。可是,如果没有业已存在的物种,没有遗传物质染色体上的基因,没有基因变化规律,新的物种是不可能制造出来的。这一事实充分说明

①随着社会的发展,物质对意识的决定作用越来越弱 ②世界是客观存在的物质世界 

③自然界是客观存在的                          ④人类社会的存在与发展是客观的

A.①②

B.②③

C.③④

D.①④

答案

答案:B

题目分析:新型物种是在业已存在的物质及对遗传物质染色体上的基因变化规律的认识基础上制造出来的,这说明自然界是客观的,世界是客观存在的物质世界,世界的真正统一性在于它的物质性,②③说法正确;①说法错误,④与题意不符。该题选B。

选择题
单项选择题

Every second in the United States alone, more than 250 animals are slaughtered for food, adding up to more than 8 billion animals each year. Reducing the amount of meat in one’s diet is nutritionally, environmentally, and ethically beneficial.

People who eat meat usually have weaker immune systems compared to those of vegetarians. Meat has been directly linked to diabetes, obesity, arthritis, and many other illnesses. Furthermore, meat-eaters are at a higher risk for diseases, including cancer, and they are more likely to die from these diseases. Critics say that a meatless diet does not provide enough nutrients, especially protein and iron. Actually, according to A Teen’s Guide to Going Vegetarian, by Judy Krizmanic, protein is found in almost every food, and iron appears in many vegetables. Getting enough nutrients in a meat-reduced diet should not be difficult. A 1988 study found that some of the highest pesticide residues appear in meat and eggs. Diets including more fruits and vegetables will only make people healthier.

Some skeptics believe that there will be a shortage of food if animals are not eaten. In fact, the opposite is true. More than 80% of the corn and 95% of the oats grown in the US are fed to livestock. The world’s cattle alone consume enough food to equal the caloric needs of 8.7 billion people, more than the entire human population. One half of the water used in the Unites States also goes to livestock; 2.50 gallons of water produces only 1 pound of beef. If people eat less meat and more plants, the amount of available food will increase.

Many people become vegetarians because they feel that eating animals is unethical. 90% of these animals are raised in confinement. Chickens and other birds have only about half. a square foot of space each, and since they are raised so close together, a hot blade is used to cut off their beaks to prevent them from pecking each other to death. Likewise, pigs that are repressed will bite each other’s tails, so both their teeth and tails are removed as soon as they are born.

Eating animals is hazardous in numerous ways. Even a slight reduction in meat intake is better than nothing at all. Consuming less meat is beneficial to the health of animals, the health of people, and to the health of the world.

Which of the following is true according to A Teen’s Guide to Going Vegetarian()

A. A diet without meat cannot supply enough protein

B. Nearly all the food we eat contains protein

C. It’s difficult to get enough nutrients in a meatless diet

D. Some of the highest pesticide residues appear in meat