3.Scientists are working to develop plants that need less water.Thomas Tommy Carter is a plant scientist from the United States.He leads a group of researchers at five universities.They have developed soybeans (大豆)that can grow well in dry conditions.
Tommy Carter started working on drought-resistant(抵御干旱的)soybeans in 1981.His research has taken him as far as China,where soybeans have grown for thousands of years.
"Farmers in the United States,however,have grown soybeans for only about a century."Tommy Carter says,"More differences could better protect the plants like soybeans against climate(氣候.)changes."
The US Agriculture Department has a great soybean collection.Tommy Carter and his group studied over 2,500examples from the collection They searched for germplasms(胚質(zhì))that could keep the plants growing during hot,dry summers in the United States.The group is now doing field tests.

76.What does Tommy Carter do?He's a (plant) scientist/A (plant) scientist
77.Which country has he been to for his research?He's been to China./China
78.How long have the US farmers grown soybeans?They have grown soybeans for only about a century./(For) (only) about a century./(For) (only) about 100 years.
79.Tommy Carter and his group studied more than 2,500 examples from the collection,didn't they?Yes,they did.
80.What's the purpose of their research?The purpose (of their research) is to develop plants that need less water..

分析 【文章主旨】這是一篇有關(guān)科技方面的閱讀,短文主要講的是植物科學(xué)家Tommy Carter和他的團(tuán)隊一直在研究一種需水量少的抗旱的植物.并為此還遠(yuǎn)赴中國,并且現(xiàn)在還在研究能在美國炎熱,干燥的夏天也能生長種植.

解答 76.He's a (plant) scientist/A (plant) scientist【解析】細(xì)節(jié)理解題.根據(jù)文中第一段中Thomas Tommy Carter is a plant scientist from the United States.可知Thomas Tommy的職業(yè)是一名植物科學(xué)家,所以答案應(yīng)為He's a (plant) scientist/A (plant) scientist.
77.He's been to China./China.【解析】細(xì)節(jié)理解題.根據(jù)文中第二段中His research has taken him as far as China,可知他曾為了研究跑到了遙遠(yuǎn)的中國,再結(jié)合題干,所以答案應(yīng)為He's been to China./China.
78.They have grown soybeans for only about a century./(For) (only) about a century./(For) (only) about 100 years.【解析】細(xì)節(jié)理解題.根據(jù)文中第三段中Farmers in the United States,however,have grown soybeans for only about a century可知美國的農(nóng)民種植大豆的時間只有差不多一個世紀(jì)的歷史.可得答案應(yīng)為They have grown soybeans for only about a century./(For) (only) about a century./(For) (only) about 100 years.(三種都可)
79.Yes,they did.【解析】細(xì)節(jié)理解題.根據(jù)文中最后一段中Tommy Carter and his group studied over 2,500examples from the collection可明顯得出題干內(nèi)容符合文意,所以答案應(yīng)為Yes,they did.
80.The purpose (of their research) is to develop plants that need less water.【解析】推理分析題.縱觀全文,分別從第一段中的They have developed soybeans (大豆)that can grow well in dry conditions.他們所領(lǐng)導(dǎo)的一個研究小組已經(jīng)開發(fā)出可以在干旱條件下生長良好的大豆.以及最后一段中的They searched for germplasms(胚質(zhì))that could keep the plants growing during hot,dry summers in the United States.他們尋找一種在美國炎熱,干燥的夏天也能生長的種質(zhì).可以得出他們研究的目的是研發(fā)一種需水量少的抗旱的植物.所以答案應(yīng)為The purpose (of their research) is to develop plants that need less water.

點(diǎn)評 這篇短文內(nèi)容比較簡單,理解不難.各小題與上下文聯(lián)系比較緊密,然后從中找出相關(guān)的信息,寫出正確答案,答完后多讀幾遍,看看是否符合邏輯,適當(dāng)修改.

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