1.突变和基因重组产生了生物进化的原始材料，现代生物技术也是利用这一点来改变生物遗传性状，以达到人们所期望的目的。下列有关叙述错误的是　　　　　　 (　)

A.转基因技术造成的变异，实质上相当于人为地基因重组，但却导致了自然界没有的定向变异的产生

B.体细胞杂交技术是人为造成染色体变异的方法，它打破了自然界生殖隔离的限制

C.人工诱变没有改变突变的本质，但却因突变率的提高而实现了定向变异

D.经过现代生物技术的改造和人工选择的作用，许多生物变得更适合人的需要

解析：人工诱变的本质是基因突变，可以提高突变率但不能控制突变方向。

答案：C

“How did you do it，Dad？How have you __1__ not to have a drink for almost twenty years？” It took me almost twenty years to have the __2__ to ask my father these very personal questions.When Dad first stopped drinking，the whole family was __3__ every time he got into a situation that __4__ have started him off drinking again.For a few years we were __5__ to bring it up __6__ the drinking would begin again.

“I would recite this little __7__ to myself at least four to five times a day，” Dad replied. “The words were a __8__ and a reminder to me.They told me that things were never so difficult that I could not __9__ them，” Dad said.Then he __10__ the poem with me.It was __11__，yet the meaningful words immediately became a part of my daily life.

About a month after this talk with my father，I received a __12__ from a friend.It was a book of daily mottos with one listed for each day of the year.

It has been my __13__ that when you get something with days of the year on it，you naturally __14__ the page that lists your own birthday.

I hurriedly opened the book to the page of November 10 to see what words of __15__ this book had in __16__ for me.I was shocked to see the words on that __17__.There was the exact same poem that had helped my father for all these years！It is called the Serenity(平静)Prayer：

God，grant me the Serenity to __18__ the things I cannot __19__，the Courage to change the things I can，and the Wisdom to know the __20__.

[解题导语] 文章讲述了父亲成功戒酒的故事，而作者由此也受到人生的启示。

1．A.decided　 B．tried　 C．attempted　 D．managed

解析：由文意可知，父亲已成功戒酒，故用manage to do“设法做成了(某事)”。

答案：D

2．A.courage　 B．bravery　 C．confidence　 D．pride

解析：下文有提示：these very personal questions，故用have the courage to do sth.“有勇气做某事”。

答案：A

3．A.nervous　 B．anxious　 C．eager　 D．concerned

解析：由下文可知，家人怕父亲再喝酒，故紧张。

答案：A

4．A.must　 B．would　 C．could　 D．should

解析：would have done指有可能发生(实际上没有)，符合文意。

答案：B

5．A.nervous　 B．afraid　 C．fearful　 D．cautious

解析：be afraid to do“不敢做(某事)”，符合文意。

答案：B

6．A.for fear　 B．in case of　 C．as a result　 D．in some way

解析：for fear“恐怕”，符合文意。

答案：A

7．A.poetry　 B．poem　 C．story　 D．message

解析：根据下文可知此处为poem。

答案：B

8．A.relaxation　 B．liberation　 C．freedom　 D．relief

解析：由下文诗的内容可知应用relief“慰藉，宽慰”。

答案：D

9．A.handle　 B．do with　 C．get through　 D．go through

解析：handle“解决(问题)”，符合文意。

答案：A

10．A.read　 B．recited　 C．shared　 D．enjoyed

解析：由下文可知，父亲与“我”分享了那首诗，share sth. with sb.“与某人分享某事”。

答案：C

11．plicated　 B．difficult　 C．simple　 D．plain

解析：根据后面的yet可以判断，这首诗很简单。

答案：C

12．A.book　 B．poem　 C．gift　 D．letter

解析：根据后面的book判断这是一份礼物，是一本书。

答案：C

13．A.motto　 B．experience　 C．chance　 D．prayer

解析：由下文描述可知，此处指作者的经验。

答案：B

14．A.open　 B．switch　 C．turn to　 D．come across

解析：turn to“翻到(某一页)”，符合文意。

答案：C

15．A.philosophy　 B．wisdom　 C．methods　 D．tricks

解析：由上文a book of daily mottos可知应用wisdom，words of wisdom“名言警句”。

答案：B

16．A.shop　 B．store　 C．the corner　 D．the way

解析：in store“等待着，准备着”，符合文意。

答案：B

17．A.book　 B．paper　 C．page　 D．motto

解析：上文提及11月10日的那一页，故此处用page。

答案：C

18．A.receive　 B．acquire　 C．obtain　 D．accept

解析：由下文语意，应是接受那些“我”无力改变的事情。

答案：D

19．A.solve　 B．change　 C．turn　 D．face

解析：见上题解析。

答案：B

20．A.result　 B．goal　 C．difference　 D．future

解析：此处指上面提到的两种情况的区别。

答案：C

5．They are likely to become angry with him.

4．The fire reduced the forest to a few trees.

3．He was addicted to cocaine.

2．The doctor drugged his patient quickly.

5．他们可能会对他发怒。(likely)

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答案：1.So excited was his father that he couldn’t keep his tears on his face.

4．大火把森林烧得仅剩下几棵树。(reduce...to...)

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3．他吸可卡因上瘾。(addicted)

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2．医生迅速地用药麻醉了患者。(drug)

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