Question

18．People need to seek out new foods because the world has so many mouths to feed．As of
2015，there are more than seven billion people on Earth，according to the United Nations．
And by 2100 that number may double．Feeding all of these people means not only improving the way food is grown，but also finding new sources of nutrition．
And that quest is becoming ever more urgent.1f nothing changes，within 35 years，the
world's appetite will be greater than the amount of food produced．That's according to a report released last year．It was prepared by the Global Harvest Initiative，a private agriculture group based in Washington，D．C．
Global warming，too，is changing food production．Scientists predict that rising
temperatures will reduce the growth of important crops like wheat，corn and soybeans．Low-income developing countries will be hit the hardest．When harvests fall，crops become more expensive．And since those foods are also used to feed animals like cows and pigs，meat prices too，will rise．
All over the world，researchers are racing against the clock to figure out how best to feed more people in a fast-changing world．And some surprising ideas have begun to come up．WO years ago，scientists introduced the first burger made from meat grown in a lab．
the project cost more than $ 300，000，but it's a start．Other researchers are developing seeds that can survive high temperatures and drought．Still others are finding ways to improve the genes of meat animals so they produce more meat and can stand the heat．
gloomy （悲觀的） forecast for the planet isn't the only reason to study foods for the
future．It P s a creative quest that will inspire people who can think in new ways about existing plants and animals even insects．These researchers have used their talents in ways that even they never would have predicted．
28．What do the underlined words"that quest"in paragraph 2 refer to？A
A．The research on food．
B．The increase of population．
C．The variety of nutrition．
D．The change of appetite．
29．How does global warming affect low-income developing countries？D
a．Increase meat prices．b．Raise the temperature．
c．Reduce the growth of crops．d．Lead to the high cost of life．
e．Cause a higher price for crops．
A．d→a→c→d→e           B．c→a→b→d→e
C．d→e→c→a→b           D．b→c→e→a→d
30．What is mainly talked about in Paragraph 4？C
A．New ways of farming．
B．Some great researchers．
C．Progress in food research．
D．Achievements in lab experiments．
31．What will be discussed in the following paragraph？A
A．Examples of successful food researchers．
B．Different opinions about the future food．
C．Methods of dealing with global warming．
D．Possibilities of feeding the present population．

Answer 1

分析 人們需要尋找新的食物，因?yàn)槭澜缟嫌羞@么多的人要養(yǎng)活．截至2015年，世界人口已超過(guò)七十億人，根據(jù)聯(lián)合國(guó)的報(bào)告，2100年這個(gè)數(shù)字可能會(huì)翻一番．養(yǎng)活這些人不僅意味著提高糧食種植的方式，而且還可以尋找新的營(yíng)養(yǎng)來(lái)源．

解答 28．A 詞義猜測(cè)題．根據(jù)上文內(nèi)容可知，人們需要尋找新的食物，因?yàn)槭澜缟嫌羞@么多的人要養(yǎng)活．養(yǎng)活這些人不僅意味著提高糧食種植的方式，而且還要尋找新的營(yíng)養(yǎng)來(lái)源．所以句中的"這個(gè)任務(wù)"應(yīng)指關(guān)于糧食的研究，故選A．
29．D 細(xì)節(jié)理解題．根據(jù)第三段內(nèi)容可知，氣溫上升將減少小麥、玉米和大豆等重要農(nóng)作物的增長(zhǎng)．低收入的發(fā)展中國(guó)家將受到最嚴(yán)重的打擊，當(dāng)收成下降，農(nóng)作物變得越來(lái)越昂貴，因?yàn)檫@些食物也被用來(lái)喂養(yǎng)像牛和豬一樣的動(dòng)物，所以肉的價(jià)格也會(huì)上升．因此全球變暖引起氣溫上升，氣溫上升導(dǎo)致農(nóng)作物減產(chǎn)，農(nóng)作物減產(chǎn)引起糧食和肉價(jià)上升，最終導(dǎo)致低收入發(fā)展中國(guó)家高昂的生活成本，故選D．
30．C 主旨大意題．根據(jù)第四段的內(nèi)容可知，兩年前，科學(xué)家推出了第一個(gè)用實(shí)驗(yàn)室培育的肉做成的漢堡．其他研究人員在開(kāi)發(fā)可以經(jīng)受高溫和干旱的種子．還有一些人正在尋找改善肉類動(dòng)物的基因的方法，這樣他們能生產(chǎn)更多的肉和承受高溫．所以第四段主要講了食物研究的進(jìn)展，故選C．

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