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27.The red flag looks extremely beautiful     the blue sky and white clouds.

    A.through       B.across         C.against       D.beyond

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26.How long do you think __________ the computer company turns out a new product?

    A.it will be that                    B.will it be until               

    C.will it be since                 D.it will be before

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25.- Good morning.How much should I pay for these books __________ to Alabama?

    - Hmm, about ten dollars.

    A.to be sent     B.being sent     C.sent          D.having been sent

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24.China’s new food law provides for a food recall system __________ producers have to stop production if their food isn’t up to standards.

    A.where        B.that          C.when                  D.which

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23.- Do you think the weather is good enough for the picnic?

    -Yes.You couldn’t hope for __________ day at this time of the year.

    A.a nice        B.the nice       C.a nicer                  D.the nicest

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22.- What about Mr.Brown’s speech?

    - I understood most of what he said, but not __________ word.

    A.any          B.each         C.every         D.one

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第一节  单项填空 (共15小题;每小题1分,满分15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。

例:It is generally considered unwise to give a child ___________ he or she wants.

    A.however      B.whatever      C.whichever     D.whenever

    答案是B。

21.- Really? Who will give __________ lecture next Saturday?

   - Mr.Wang, __________ professor from Nanjing University.

    A.the; 不填      B.the; a         C.a; the        D.a; a

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40.(10分)干扰素常用于治疗病毒感染引起的疾病,现在可以通过基因工程大量获得。

请回答相关问题。

  (1)若已知干扰素的氨基酸序列,则获取目的基因的较简单方法是         

  (2)基因表达载体除含有干扰素基因外,还必须有               

         等。

  (3)如果受体细胞为受精卵,则此过程还涉及到动物细胞培养技术,动物细胞培养的条件包括无菌、无毒的环境、营养、       、气体环境,提供气体中CO2的主要作用是           

  (4)转基因技术是否成功,需要对受体细胞进行分子水平的检测,首先是检测受体细胞染色体的DNA上是否插入目的基因,这是目的基因能否在真核生物中稳定遗传的关键,检测的方法是         。最后,还要检测目的基因是否翻译成了相应蛋白质,利用的技术是        

  (5)2010年春,新疆的特大雪灾使大量羊冻死。有人就设想将鱼的抗冻蛋白基因导入羊的_____________________中,培育抗寒能力更强的转基因羊。那么培育该转基因羊的最后一道“工序”是胚胎工程的          技术。

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