职称英语考试

试题来源：2015年职称英语《理工类A级》模拟试题及答案(2)
【单选题】Genetically Modified Foods
If you want to spark a heated debate at a dinner party, bring up the topic of genetically modified foods. For many people, the concept of genetically altered, high-tech crop production raises all kinds of environmental, healthy, safety and ethical questions. Particularly in countries with long grain traditions-and vocal green lobbies--the idea seems against nature.
In fact, genetically modified foods are already very much a part of out lives. A third of the corn and more than half the soybeans and cotton grown in the U.S. last year were the product of biotechnology, according to the Department of Agriculture. More than 65 million acres of genetically modified crops will be planted in the U.S. this year. The genetic genie ( 妖怪 ) is out of the bottle.
Yet there are clearly some very real issues that need to be resolved. Like any new product entering the food chain, genetically modified foods must be subjected to rigorous testing. In wealthy countries, the debate about biotech is tempered by the fact that we have a rich array of foods to choose from and a supply that far exceeds our needs. In developing countries desperate to feed fast-growing and underfed populations, the issue is simpler and much more urgent: Do the benefits of biotech outweigh the risks? The statistics on population growth and hunger are disturbing. Last year the world's population reached 6 billion. The U. N. estimates that nearly 800 million people around the world are undernourished. The effects are devastating. About 400 million women of child-bearing age are iron deficient, which means their babies are exposed to various birth defects. As many as 100 million children suffer from vitamin A deficiency, a leading cause of blindness.
How can biotech help? Biotechnologists have developed genetically modified rice that is fortified with beta-carotene-which the body converts into vitamin A and additional iron, and they are working on other kinds of nutritionally improved crops. Biotech can also improve farming productivity in places where food shortages are caused by crop damage attributable to pests, drought, poor soil and crop viruses, bacteria or fungi.
What's the passage mainly about?
A．The world's food problems.
B．The new advancement in biotech.
C．The characteristics of genetically modified foods.
D．How biotech can help solve the world's food problems.
32、 According to the passage, genetically modified foods__________
A．are superior to naturally grown foods
B．might prove to be risky to human health
C．are going to replace naturally grown foods
D．can solve the food problems in developing countries
33、 The sentence "The genetic genie is out of the bottle." in Para. 2 probably means__________
A．the genetic genie, the key technology in producing genetically modified foods, is out in the market
B．the genetic technology has come out of laboratories into markets
C．genetically modified foods are available everywhere
D．technology with which to produce genetically modified foods may have powers unpredictable or uncontrollable by man
34、 According to the passage, biotech can help solve the problem by__________
A．producing foods that contain more nutrients needed by human beings
B．creating more varieties of foods
C．producing beta-carotene and vitamin A more efficiently
D．producing anti-virus crops
35、 The author's attitude toward genetically modified foods is__________
A．enthusiastic
B．cautious
C．disapproving
D．optimistic

网考网参考答案：C、B、D、A、B
网考网解析：点击查看解析
大数据分析：根据网考网考试中心的统计分析，该试题：
29%的考友选择了A选项
61%的考友选择了B选项
9%的考友选择了C选项
1%的考友选择了D选项