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    第一组 A B C D 1. 3. ( ) 二组 A B C D 4. 6. ( ) 【查看更多】

     

    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．                                。

    查看答案和解析>>

    （每空1分，）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）A代表        分子，B代表           ，D代表           ；
    （2）动物细胞吸水膨胀时B的厚度变小，说明B具有                 。
    （3）维生素D和葡萄糖从肠腔进入小肠上皮细胞的过程分别是图中编号          。
    （4）若图甲是癌细胞的细胞膜，则膜上含量较正常细胞减小的物质是[   ]        。
    （5）若图中是线粒体膜，b和c过程运输的气体分别是          。b、c运输方式符号图         所表示的物质运输曲线。
    （6）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＋的运输方式符合图中          所示曲线。
    （7）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、乙两组生长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．                                                                 。

    查看答案和解析>>

    听力测试九

    一、听句子，选出你所听到的单词或词组。(5分)

    1．A．perfect

    B．complete

    C．quiet

    2．A．too many

    B．too much

    C．much too

    3．A hope

    B．post

    C．host

    4．A．try

    B．drive

    C．ride

    5．A．easy enough

    B．enough easy

    C．easily enough

    二、听句子，选出正确的答语。(5分)

    6．A．How about a wallet?

    B．Buy him a book please．

    C．Would you mind getting a jacket?

    7．A．I think not

    B．I hope so．

    C．That's a good idea．

    8．A．I'll take it．

    B．It's not special enough．

    C．It's mine．

    9．A．I gave it to him．

    B．Mine．

    C．Bruce has one．

    10．A．He works in a personal company．

    B．She works as an editor．

    C．She works in a car a factory．

    三、听对话，选择正确的答案。(5分)

    听第1段对话，回答第11题。

    11．What will they get for Lisa?

    A．A C D．

    B．Goldfish．

    C．Flowers．

    听第2段对话，回答第12－13题。

    12．Why do they get a present for their teacher?

    A．Because it's her birthday．

    B．Because they like her class．

    C．Because they want to help her．

    13．What will they get for her?

    A．A necklace．

    B．Jewelry．

    C．A calendar．

    听第3段对话，回答第14－15题。

    14．Why do they buy a present for Anna?

    A．Because it's her birthday next week．

    B．Because she is ill．

    C．Because she is going to have a party．

    15．What will Anna like?

    A．A basketball．

    B．A photo．

    C．A photo album with photos of her family．

    四、听短文，选择正确的答案。(5分)

    16．How long has the woman had the monkey as a pet?

    A．For many years．

    B．For only one year．

    C．For several years．

    17．How often does the monkey wash the dishes?

    A．Once a week．

    B．Twice a week．

    C．Every day．

    18．When does the monkey get angry?

    A．When there are too many dishes for it to wash．

    B．When the woman tries to stop it washing the dishes．

    C．When it breaks a dish．

    19．Where does this story happen?

    A．In IndiA．

    B．In AustraliA．

    C．In the United States．

    20．Which sentence is RIGHT according to the story?

    A．It takes the monkey a very short time to wash the dishes．

    B．The monkey often throws the dishes everywhere．

    C．The monkey never breaks a dish while washing．

    查看答案和解析>>

    听力测试

    (一)听句子，选择与句子内容相对应的图片。每个句子读两遍。

    请看第一组的四幅图片，听三个句子，完成第1至第3小题。

    1．________

    2．________

    3．________

    请看第二组的四幅图片，听三个句子，完成第4至第6小题。

    4．________

    5．________

    6．________

    (二)听对话和问题，根据所听内容，选择最佳答案。对话和问题都读两遍。

    7．A．Black．

    B．Blue．

    C．Brown．

    D．Red．

    8．A．Monkeys and tigers．

    B．Lions and tigers．

    C．Lions and elephants．

    D．Monkeys and elephants．

    9．A．Rosa's．

    B．Tim's．

    C．Cindy's．

    D．Alice's．

    10．A．By four o'clock．

    B．By five o'clock．

    C．By six o'clock．

    D．By seven o'clock．

    11．A．In a park．

    B．In a zoo．

    C．At school．

    D．At home．

    12．A．An English teacher．

    B．A policewoman．

    C．A bank clerk．

    D．An engineer．

    13．A．Every week．

    B．Three times a month．

    C．Twice a month．

    D．Once a month．

    14．A．She has to babysit her sister．

    B．She has to go to the doctor．

    C．She has too much homework．

    D．She has a piano lesson．

    (三)听短文，根据短文内容，判断下列句子正误，正确的用“A”表示，不正确的用“B”表示。短文读两遍。听短文前，你们有20秒钟的时间阅读下列句子。

    15．Mr Smith likes collecting clocks．

    16．Mr Smith has two hundred clocks．

    17．Mrs Smith likes collecting clocks, too．

    18．Mrs Smith has to clean all the clocks every day．

    19．The sound of these clocks annoys Mrs Smith every day．

    20．They always know the real time because they have so many clocks．

    (四)听写。听对话，根据对话内容，完成下面的表格，每空词数不限。对话读三遍。听对话前，你们有15秒钟的时间阅读表格内容。(共5小题，计5分)

    查看答案和解析>>

    听力选择(共15小题，计15分；第小题约有8秒钟的答题时间)

    (一)录音中有五个句子，每个句子听一遍，然后从每小题A、B、C中选出能对每个句子做出适当反应的答语。

    1．A．Yes, lovely．

    B．Don't worry．

    C．I hope so．

    2．A．I agree．

    B．See you soon．

    C．You are welcome．

    3．A．No, thank you．

    B．Well done．

    C．you'd better not．

    4．A．Don't mention it．

    B．I will．

    C．That's a good idea．

    5．A．

    B．

    C．

    (二)录音中有五组对话，听对话两遍后，从每小题A、B、C中选出能回答所给问题的正确答案。

    6．How is Linda?

    A．Pretty．

    B．Well．

    C．Ill．

    7．What's the weather like here?

    A．Dry in summer．

    B．Wet in summer．

    C．Wet in autumn．

    8．How is Lily going home?

    A．By car．

    B．By plane．

    C．By train．

    9．When will the man meet the woman's parents?

    A．Tomorrow．

    B．Next Sunday．

    C．This weekend．

    10．Who is the present for?

    A．Mrs．Zhang．

    B．Tom．

    C．Wu Jian．

    (三)录音中有一段对话，听对话两遍后，从每小题A、B、C中选出能回答所给问题的正确答案。

    11．What is Martin doing in Boston?

    A．He is writing a story．

    B．He is painting the house．

    C．He is playing baseball．

    12．Who is painting outside?

    A．Martin．

    B．Martin's mother．

    C．Martin's father．

    13．Why didn't Martin's parents go to the cinema?

    A．They didn't like the film．

    B．They thought it was too expensive．

    C．They went shopping．

    14．Where were his parents when Martin phoned on Saturday?

    A．In the garden．

    B．In the shop．

    C．In the cinema．

    15．When will Martin call his father again?

    A．On Saturday．

    B．This evening．

    C．Next weekend．

    (四)听力填表共5小题，计5分

    录音中是一篇关于如何调整易怒情绪的短文，听两遍后，根据所听内容完成下面的表格。

    查看答案和解析>>


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