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Farmers can produce more by planting several different crops in the same field.But their success depends on which crops they plant together and how they mix (混合) them in the filed.In the past, the only way the farmers could learn which crops grow best together is to plant them and wait for the results.Now, however, a computer can give them answers.A new computer program written by Dr John Vanderwell of Michigan University can tell a farmer which plants grow well together and which do not.It can tell him how to plant the different crops; if he should plant each in a separate row, or mix the crops in the same row.It can tell the farmer how changes in planting each of the crops will affect the production of all of them.And it can tell him which plants can help reduce losses (損失) from diseases.
小題1:Which of the following best gives the main idea of the passage?

A．Computer helps find the best program for mixing plants.

B．Computer helps produce more crops.

C．Computer helps protect against insects and diseases.

D．Computer helps grow different plants.

小題2:According to the passage, to get the best result, one needs to choose carefully ________.

A．the kinds of crops to be planted together

B．the way for different crops to be mixed

C．both A and B

D．either A or B

小題3:It seems the new computer program can NOT tell us ________.

A．whether we should grow cotton and tomato together

B．how we should plant cotton and tomato together

C．what will happen if we grow potato, instead of tomato, together with cotton

D．how we can grow rice in the tomato field

小題4:The new computer program seems most useful in saving us ________.

A．man power

B．seeds

C．time

D．land

小題5:Which of the following is NOT true?

A．Computers can tell farmers how many plants can grow together.

B．With the help of computers farmers don't have to do a lot of work.

C．With the help of computers farmers can get better results.

D．The change of one plant may cause a change in production.

小題1:B
小題2:C
小題3:D
小題4:D
小題5:B

試題分析：文章介紹了一種新的電腦程序，可以告訴農民怎樣在同一塊土地上種更多的莊稼，可以節省土地。
小題1:主旨題：從文章的句子：A new computer program written by Dr John Vanderwell of Michigan University can tell a farmer which plants grow well together and which do not.可知這篇文章介紹一種電腦程序，可以知道什么莊稼在一起種最好。選B
小題2:細節題：從文章的句子：But their success depends on which crops they plant together and how they mix (混合) them in the filed.可知成功與否取決于什么莊稼在一起長比較好，怎么長。選C
小題3:細節題：從文章的句子：which plants grow well together and which do not.可知A正確，how to plant the different crops; 可知B正確，從It can tell the farmer how changes in planting each of the crops will affect the production of all of them.可知C是對的，沒有提到可以在西紅柿田里種水稻。選D
小題4:細節題：從第一句話：Farmers can produce more by planting several different crops in the same field.可知這種方法可以在同一塊土地上種更多的莊稼，就是節省土地。選D
小題5:排除題：新的方法只是讓人們在同一塊土地上種更多的莊稼，就是節省土地。但不能節省勞力。選B
點評：本文要求考生讀懂文章中的每個句子的意思還要推理它們之間的關系，結合自己的生活常識和經驗，再通過邏輯推理和判斷，理解文章的言外之意，從而揭示文章的深層涵義。任何一篇文章都有其特定的寫作目的，讀者應當知道如何去做或按照某種方式傳遞思考問題。推理判斷題的答案不可能在文章中直接找到，因此推理時我們務必要忠于原文，在文章中尋找并確定可推論的依據。

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