Question

4．t seems that nowadays all the world are concerned about genetically modified foods （GM foods）．GM foods develop from genetically modified organisms，which have had specific changes introduced into their DNA by genetic engineering techniques．These techniques are much more precise where an organism is exposed to chemicals to create a non-specific but stable change．For many people，the high-tech production raises all kinds of environmental，health and safety problems．Particularly in countries with long farming traditions，the idea seems against nature．
In fact，GM foods are already very much a part of our lives．They were first put on the market in 1996．A third of the corn and more than half the cotton grown in the US last year was the product of biotechnology，according to the Department of Agriculture．More than 65 million acres of genetically modified crops will be planted in the US this year．The genetic genie is out of the bottle．
However，like any new product entering the food chain，GM foods must be subjec ted to careful testing．In wealthy countries，the debate about biotech is not so fierce by the fact that they have a large number of foods to choose from，and a supply that goes beyond the needs．In developing countries desperate to feed fast-growing and underfed populations，the matter 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 UN states that nearly 800 million people around the world are unhealthy．About 400 million women of childbearing age don't have enough iron，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？Genetic engineering is widely used to produce plants and animals with better nutritional values．Biotechnologists have developed genetically modified rice and they are working on other kinds of nutritionally improved crops．Biotech can also improve farming productivity in places where food shortage is caused by crop damage attributable to drought，poor soil and crop viruses．
32．The passage mainly talks aboutC．
A．the world's food problem                    B．the development in biotech
C．the genetically modified foods               D．the way to solve food shortage
33．According to the passage，GM foodsB．
A．a(chǎn)re not cared about in wealthy countries at all．
B．may help solve the problem of poor nutrition
C．a(chǎn)re better than naturally grown foods in some ways．
D．can cause serious trouble in developing countries
34．The underlined sentence"The genetic genie is out of the bottle．"in paragraph 2 probably means thatC．
A．GM foods are available everywhere
B．the technology in producing GM foods is advanced
C．genetic technology has been into markets．
D．genetic technology may have uncontrollable powers
35．In countries with long farming traditions，people's attitude towards GM foods seemsC．
A．Optimistic．B．Approving．C．Disapproving．D．Unbelievable．

Answer 1

分析 本文主要寫了生物技術(shù)的在食品方面的改變，轉(zhuǎn)基因食譜遍布全世界．

解答 32．C  主旨大意題．文章第一句It seems that nowadays all the world are concerned about genetically modified foods （GM foods）．引領(lǐng)本文主要寫的是轉(zhuǎn)基因食品．所以答案選C．
33．B 細(xì)節(jié)理解題．根據(jù)最后一段句子 Genetic engineering is widely used to produce plants and animals with better nutritional values．基因工程被廣泛用于生產(chǎn)具有更好營(yíng)養(yǎng)價(jià)值的動(dòng)植物．所以答案B正確．
34．C 考查句意理解．第二段說(shuō)1996年的時(shí)候第一批轉(zhuǎn)基因食品投入市場(chǎng)，More than 65 million acres of genetically modified crops will be planted in the US this yearThe genetic genie is out of the bottle．今年將在美國(guó)種植超過(guò)6500萬(wàn)英畝的轉(zhuǎn)基因作物．可見(jiàn)最后這句話的意思是轉(zhuǎn)基因食品已經(jīng)進(jìn)入市場(chǎng)了，也就是妖怪從瓶子里出來(lái)了．所以答案選C．
35．C 細(xì)節(jié)理解題．根據(jù)文中句子Particularly in countries with long farming traditions，the idea seems against nature．尤其是那些擁有悠久農(nóng)耕傳統(tǒng)的國(guó)家，這種想法似乎違背了自然規(guī)律． 可見(jiàn)認(rèn)為這違背自然的規(guī)律，應(yīng)該是不贊同的，所以答案選C．

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