题干

下列关于多细胞生物体细胞分裂和分化的叙述中,错误的是(  )

A:细胞分裂的结果是使细胞数目增多

B:细胞分裂过程中细胞核和细胞质都要分成两份

C:细胞分化过程中,细胞中的遗传物质将逐渐减少

D:细胞分化的结果产生了组织

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答案(点此获取答案解析)

C

同类题2

完形填空

    My mother asked me to call my grandmother. What could we possibly have a1about? Nothing! I just did what she told me and2called my grandmother.

    When she3the phone, I planned. to have a small,10-minute exchange.4, she invited me to lunch at her house so we could5together. Hesitantly, I agreed.

    After hanging up the phone I immediately6agreeing to the lunch date on Saturday.

    Surprisingly, my Saturday morning wasn't7.I found it was nice to see her. I forgot the time8her stories about her recent trip to Europe and her sewing class. I wasn't9that 60-year-old people had a social life. It turned out that he r10wasn't as mundane(平凡的)as I thought. I was happy to have spent time with her. We planned to meet11at her house. My mom didn't have to12me any more.

    This time I didn't feel the gloom(忧郁).13 I wanted to ask were building up in my mind: What was my grandfather like? What did you do at my age?

    As we looked through pictures, I was14.I had never seen, nor imagined, my grandmother as a young girl. She reminded me of myself. I learned that as humans, we15human experiences, no matter what age.

    She told me about the time she and her friends went swimming in the lake late at night and the first time she met my16."You would have adored him. He was the funniest man I'd ever met." We sorted through three shoeboxes of photographs, each with a17story.

    Ever since that18phone call to my grandmother, we have talked at least once a week. I regret not calling her earlier. She has19me what can't be learned in a textbook: being open to new things, enjoying the simple things, and appreciating what life has given me. I have20a new perspective(视角)on life.

同类题4

阅读下列名著选段,完成第下列小题。

       明天就要把书稿寄到列宁格勒,请州委文化宣传部审阅。如果他们同意给这部小说开“出生证”,就会把它送交出版社,那么一来……想到这里,他的心不安地跳动起来。那么一来……新的生活就要开始,这是多年紧张而顽强的劳动换来的啊。

       书的命运决定着保尔的命运。如果书稿被彻底否定,那他的日子就到头了。如果失败是局部的,通过进一步加工还可挽救,他一定会发起新的进攻。

       母亲把沉甸甸的包裹送到了邮局。紧张的等待开始了。保尔一生中还从来没有像现在这样痛苦而焦急地等待过来信。他从早班信盼到晚班信。列宁格勒一直没有回音。

       出版社的沉默逐渐成为一种威胁。失败的预感一天比一天强烈,保尔意识到,一旦小说遭到无条件的拒绝,那也就是他的灭亡。那时,他就没法再活下去了。活下去也没有意义了。   

       此时此刻,郊区滨海公园的一幕又浮现在眼前,他一次又一次地问自己:“为了冲破铁环,重返战斗行列,使你的生命变得有益于人民,你尽了一切努力了吗?”每次的回答都是:“是的,看来是尽了一切努力了。”好多天过去了,正当期待已经变得无法忍受的时候,同儿子一样焦虑的母亲一面往屋里跑,一面激动地喊道:“列宁格勒来信了!!! 这是州委打来的电报。电报上只有简单几个字:

       小说备受赞赏,即将出版,祝贺成功。

       他的心欢腾地跳动起来。多年的愿望终于实现了!铁环已经被砸碎,他拿起新的武器,重新回到战斗的行列,开始了新的生活。