题目内容

7.-Can I have some cheese pies,Mum?
-Sorry,dear.These pies _________for the kids in the disabled children's home.(  )
A.some preparingB.have preparedC.are prepared

分析 --妈妈,我可以吃一些奶酪派吗?
--抱歉,亲爱的,这些奶酪派是为残疾儿童福利院的孩子们准备的.

解答 答案:C.
首先根据语境推测答语的句意是"抱歉,亲爱的,这些奶酪派是为残疾儿童福利院的孩子们准备的.",由于句子表述的是现在的客观事实,所以用一般现在时,主语 these pies是动作prepare 的承受者,所以用被动语态,一般现在时被动语态的构成是:主语+am/is/are+动词的过去分词,故选C.

点评 本题考查时态和语态.每个时态都有标志词,熟记这些标志词是做题的关键.在没有时间状语的情况下可以根据语境来对时态做出判断.判断语态的关键则是观察主语是谓语动词的执行者还是承受者.

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2.Do you know about Dolly,a famous sheep?She was created by cloning more than ten years ago in Scotland.Cloning is famous throughout the world.It is an experiment to make an animal that is exactly like its parent.So far,scientists have cloned rabbits,sheep,cows,mice,pigs and some other animals.
But what is used in cloning?It's DNA.There is DNA in most living things,including human beings.Your DNA is the same in every part of your body.For example,your fingernails have the same DNA as your hair.You have your own DNA,which is similar to your parents',but not exactly the same.However,Dolly's DNA is exactly the same as that of the sheep she was cloned from.
No doubt cloning can help save those animals in danger.And it can also benefit human beings.The cloning technology has been used in human organs.With its help,scientists are able to explore more ways to treat many serious diseases such as heart disease,AIDs and cancer.However,cloning could be used in some ways to harm society.All governments should make laws to make sure it can be used properly.
51.When and where was Dolly created?C
A More than one hundred years ago,in the USA.
B.More than fifty years ago,in Scotland.
C.More than ten years ago,in Scotland.
D.More than fifty years ago,in China.
52.According to the passage,which one hasn't been cloned by scientist?D
A.cows           B.mice         C.rabbits             D.giraffe
53.Which of the following is true according to the passage?C
A Cloning is an experiment to make an animal that is different from its pare nt.
B.Your our fingernails don't have the same DNA as your hair.
C.Your DNA isn't exactly the same as your parents.
D.Cloning won't be used in any ways to harm society.
54 The cloning technologyB
A is not famous throughout the world.
B.has been used in human organs.
C.has been used properly.
D.is useless.
55.The best title for passage isD
A Dolly         B.Society      C.DNA         D.Cloning.

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