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26.一Thank God! It’s a fine day.The rain      !

   -But I don’t know how long it will stay fine.

   A.is stopping    B.has stopped     C.stopped        D.will stop

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25. Whether ways will be found to help China _______ the current world financial crisis is just _______ worries the public.

    A.prevent ;that     B.survive ;what    C.forbid; that      D.quit ;what

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24. ____for the people’s savement,the strong pig in the Wenchuan earthquake     till now.

    A.If it is not;can’t live             B.Were it not:couldn’t live

    C.Had it not been;couldn’t have lived   D.If they were not;couldn’t live

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23. The song You And Me _________ on the radio interests everyone.

  A.playing  B.played  C.is played     D.has been played

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22. President Hu Jintao visited the museum of Xiaogang Village in Anhui in November, 2008.It was the first time that he _________ here .

    A.came  B.had come  C.has come  D.has been coming 

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第一节 单项选择(共15小题;每小题1分,满分15分)

21.Because of ______ high demand for Type AB blood, ______ supplies of it are usually limited.

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

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34.(8分)在低温下,将叶片置于研钵中研磨后,将叶细胞匀浆分级离心,结果如下图所示。请用P1-P4回答问题。

(1) DNA含量最多的是_______,因为____           ____。

(2)合成酶的结构在__________。

(3)给P2照光,有氧生成,说明P2主要是___  ___。

(4)能把葡萄糖彻底分解成CO2和H2 O的是__      ___。

(5)正常的植物细胞内,P1能合成___   __,P2能合成__   _, P4能合成_____ 

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33.(9分)概念图是一种能够比较直观体现概念之间关系的图示方法。请根据所学知识,完成相关的概念图。

(1)填写有关数字所代表的内容:

         ;④          ;⑥       

(2) ①和⑥基本组成单位分别是             

它们的不同是                          

(3)禽流感病毒是一种RNA病毒,为什么它的种类要比乙肝病毒(DNA病毒)要多?                        

(4)在动、植物细胞的      (填一种细胞器)中也有①物质,可以进行②③过程。

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同步练习册答案