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28.Letters to the editor must carry the writer’s full name, which indicates that writers are _____for what they say.

A. considerate    B. reasonable    C. independent      D. responsible

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27.It was shameful to be found sleeping in class. His classmates’ laughter only_____ his embarrassment.

A. added to     B. appealed to    C .referred to      D. applied to

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26.She was not beautiful, she didn’t _______her mother, who was a beauty.

A. like          B .imitate      C. resemble         D. represent

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25.He suddenly saw Sue across his room ,so he ______his way through the crowd to get to her.

A. felt          B. pushed     C .struggled         D. wound

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23.Just as the clothes a person wears, the food he eats and the friends with whom he spends his time ,his house ______his personality.

A. resembles       B .strengthens      C. reflects          D .shapes

24 Polar explorers have to be extremely______ to bear the climate and other hardships.

A. tough        B. rough      C. difficult          D. brave

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22. As a good teacher, he should use different ways to encourage all children to realize their full ____and achieve their goals.

A. possibility    ception      C .potential         D. difference

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第一节:多项选择(共10小题;每小题1分,满分10分)

从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

21.This restaurant has become popular for its wide _____of foods that suit all tastes and pockets.

A. division        B. area         C. range          D .circle

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23.(8分)1952年,莱德伯格夫妇通过“影印培养法”,研究大肠杆菌抗链霉素的突变与环境因素的关系。实验的过程如下图所示:

       

说明:将原始菌种培养在1号培养基中,待长出很多菌落后,将灭菌绒布面按到1号培养基上,使绒布面沾上各个菌落。然后再将绒布面分别按到2号和3号培养基上,使绒布面上的菌落按照原位接种到2号和3号培养基上,这种接种方法称为“影印接种”。同理,6号和7号接种自5号培养基,10号和11号接种自9号培养基。

请据此实验回答下列问题:

  (1)细菌抗药性变异的来源属于       。如果3中没有细菌长出,说明         

(2)3号与2号培养基中的菌落数的比值,是抗性菌落(株)占全部菌落(株)的比例。观察实验结果,判断4、8、12中抗性菌落(株)的比例最大的是       ,其中的细菌及其亲代有没有接触过链霉素?        

(3)可见,细菌抗药性的形成是在施加链霉素之      (前或后)。链霉素对细菌抗性菌落(株)的作用在于       ,其内在实质是                        

(4)尽管环境中细菌菌群中存在抗药性基因,但是目前仍使用抗生素治疗由细菌感染引起的疾病。原因在于菌群中                     。但如果不加节制的滥用抗生素,可能导致的后果是抗生素的药效降低。

湖北省监利县第一中学2011届高三八月月考

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