0  391836  391844  391850  391854  391860  391862  391866  391872  391874  391880  391886  391890  391892  391896  391902  391904  391910  391914  391916  391920  391922  391926  391928  391930  391931  391932  391934  391935  391936  391938  391940  391944  391946  391950  391952  391956  391962  391964  391970  391974  391976  391980  391986  391992  391994  392000  392004  392006  392012  392016  392022  392030  447090 

2.对下列生物特征的叙述,正确的是                   ( )

①酵母菌 ②乳酸菌 ③硝化细菌 ④衣藻 ⑤金鱼藻

⑥烟草花叶病毒

A.①②⑥都是原核生物,且都能发生突变

B.①②③都不含叶绿素,且都是分解者

C.①③都是异养生物,且都能进行有氧呼吸

D.③④⑤都具有细胞结构,且都有细胞壁

解析:A错误:①酵母菌是真核生物,⑥烟草花叶病毒不是细胞生物;B错误:③硝

化细菌是生产者;C错误:③硝化细菌能将无机物合成有机物,是自养生物。

答案:D

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1.(2010·广州模拟)浒苔是一种绿藻,奥运会前大量出现在青岛奥帆赛水域,而2007  年引起太湖水华的是蓝藻。下列有关绿藻和蓝藻的叙述正确的是     ( )

A.蓝藻是好氧藻类,其生命活动所需的能量主要由线粒体提供

B.蓝藻属于生态系统中的生产者,光合作用的场所是叶绿体

C.两者均含有叶绿素,但后者没有叶绿体

D.两者均能进行光合作用,但前者没有线粒体

解析:蓝藻属原核生物,没有线粒体、叶绿体,但具备光合作用所需的色素和酶,

能进行光合作用,在生态系统中属于生产者。绿藻为真核生物,有线粒体、叶绿

体。

答案:C

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第二节:书面表达(满分25分)

假如你的名字是李华,最近你听到有关我国部分地区许多希望学校被荒废的新闻报道后,很是伤心。于是,你决定向一家英文报社写一封信,表达你的看法,内容包括:

◆希望学校对我国教育的贡献;

◆荒废的原因:缺乏规划和预测、社会的发展变化等;

◆如何处理荒废的学校。

注意:1.词数120左右;

2.可以适当增加细节,以使行文连贯充实;

 3.文章的开头与结尾已经给出(不包括在词数内)。

Dear Sir/Madam,

  Recently I have heard about some news that many Project Hope Schools in many areas have been deserted.

                                     

                                      

   Sincerely yours,

Li Hua

参考范文:

Dear Sir/Madam,

Recently I have heard about some news that many Project Hope Schools in many areas have been deserted. At the news I feel very sad. After all, these Project Hope Schools increase children's chances of going to school and play an important part in improving the local people's level of education and thus further their quality of life.

Why are they deserted? On the one hand, before these schools began to be built, there was a lack of scientific long­term planning and predictions of the development of Chinese education.Therefore, the distribution of schools isn't reasonable. On the other hand, owing to the social development and the declining population, it's unnecessary for so many schools to exist.

So when we build schools, we must be aware of their development in the future and consider whether there's a long­term need. And for those deserted schools, they should be made the best of and continue to serve the local areas.

Sincerely yours,

                                   Li Hua

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