. From this simple concept ________ that has caused a great change in farming.A.

. From this simple concept ________ that has caused a great change in farming.A.

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. From this simple concept ________ that has caused a great change in farming.
A.has developed a techniqueB.has a technique developed
C.a technique has developedD.developed as a technique has

答案
A
解析

举一反三

. The main fact(or)s in human life are five: birth, food, sleep, love and death. (One could increase the number— add breathing for instance— but these five are the most obvious.) Let us ask ourselves ________ our lives.
A.they play in what partB.they play what part in
C.what part they play inD.in what part they play

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. A look at recent trends in world fisheries reveals ________ the ocean on a global scale.
A.how we have swiftly affectedB.that how swiftly we have affected
C.how swiftly we have affectedD.however swiftly we have affected

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. A little learning is not dangerous so long as you know ________.
A.thatB.that there is a littleC.it is a littleD.that it is little

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. Her unusual success shows that if someone can do their job really well, then the question ________ male or female is not so important.
A.if they areB.of whether they areC.whether they beingD.of whether to be

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. ________ in one leg, he never had a chance to get a job.
A.Weak and lameB.He was weak and lame
C.Though weak and lameD.Weak and lame as he was

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