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题目列表(包括答案和解析)

如图甲表示某生物膜结构,图中A、B、C、D、E、F表示某些物质,a、b、c、d表示物质跨膜运输方式。图乙和图丙表示物质运输曲线,请据图回答:


(1)若图甲是癌细胞的细胞膜,则膜上含量较正常细胞减少的物质是[  ]    
(2)若图甲是线粒体膜,b和c过程运输的气体分别是    。b、c运输方式符合图    所表示的物质运输曲线。
(3)若图甲表示人体红细胞膜,则表示Na、K运输的分别是图中      。Na、K的运输方式符合图    所示曲线。
(4)已知红细胞吸收葡萄糖是协助扩散,而有人认为小肠上皮细胞以主动运输的方式吸收葡萄糖,请设计实验加以确定。
①实验步骤:
第一步:取甲、乙两组生理状况相同的小肠上皮细胞,放入适宜浓度的含有葡萄糖的培养液中。
第二步:甲组细胞给予正常的呼吸条件,         
第三步:                
②预测实验结果并分析:
a.若甲、乙两组细胞对葡萄糖的吸收速率基本相同,则         
b.                                

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书面表达

同学们,我们身边有很多助人为乐的同学,他们的事例值得我们学习。请根据下面表格信息给学校英文报写一篇短文,谈谈身边的好人好事,号召大家向他们学习。

要求:1.参考表格信息,可适当发挥;

2.语句通顺,意思连贯,书写工整。

3.文中不得出现真实地名和姓名;

4.词数:60-80词。(开头和结尾已给出,但不计入总词数)

Dear Editor,

  In our school, some students are always thinking more of others and are ready to help them.I'm moved deeply.Here is what they usually do.

  Liu Na is a very good student

______________________________

  I hope everyone can learn from them and do something for others.

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根据对话内容,在空白处填写适当的话语(话语可以是一个句子,也可以是一个短语或一个词),使对话完整。

  Zhao Dan:Hi, Sun Yang! A nice day, isn't it?

  Sun Yang:Yeah!   1  , Zhao Dan?

  Zhao Dan:I'm going to play tennis.

  Sun Yang:Tennis? Are you   2   in tennis?

  Zhao Dan:Yes.I have been playing it since I watched Li Na play tennis on TV for the first time.Sun Yang:  3  ?

  Zhao Dan:She is my favorite sports star.She won the tennis championship in France in June.

  Sun Yang:Oh, maybe that's why more and more people love this sport.

  Zhao Dan:You’re right.One more thing, she is also good at English.She can   4   foreigners freely.

  Sun Yang:How cool she is! I want lo learn to play tennis, too.

  Zhao Dan:No problem! My uncle is a tennis coach.He can coach us.

  Sun Yang:May I   5   you today?

  Zhao Dan:Of course.Let's go.

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g _t_r           d_nc_?            ch_ss?

p_ _nt          sp_ _k             p_ _n_

sw_m_ _r?       ch_ldr_n             k_d s_ _mer?         c_ _p              dr_m

tr_mp_t?         vi_l_n             m_s_c_an

m_ _be?         t_lk?

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补全对话。根据对话内容,从右边方框中选出适当的选项补全对话。
并将选项的编号字母依次填在答题卡的相应位置。 (共 4 小题,每小题 1分;计 4 分)
David: Excuse me.
Waitress: Yes?   【小题1】  
David: I ordered my dish half an hour ago, but I haven’t got it yet.
Waitress:   【小题2】  I’m going to see if it’s ready.
(The waitress comes back from the kitchen. )
David: Sir, I’ve just checked with the kitchen and your food will come up next.   【小题3】  
David: Thank you.
Waitress: Please enjoy your food. Again, I’m sorry that I have kept you waiting so long.
David:   【小题4】  

A.Oh, here it comes.
B.It doesn’t matter.
C.I’m sorry for that.
D.What can I do for you?

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