题干

下列关于生物进化的历程和原因的叙述,不正确的是(     )  

A:化石为研究生物进化提供最直接可靠的证据

B:动物在沙地上留下的足印,也可以形成化石

C:在年代久远的地层中不可能找到低等生物的化石

D:根据马的化石推测现代马可能由始祖马进化而来

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答案(点此获取答案解析)

C

同类题1

阅读下面文章,回答问题。

《给你人间寻常爱》

邓海燕

      ①一天,12岁的儿子放学回家,忽然问我:“妈妈,假如——假如啊,你别当真,我说的是假如。”我看他如此郑重,便有些好奇,说:“我知道你是假如,假如怎么样?”“假如,我被很严重地烧伤了,需要植皮……”我打断孩子的话,当即接口:“妈妈自然给你我自己的皮肤。”孩子摇头:“我当然知道你会给我。可我说的不是这个。你听我说,植皮手术只能在人清醒的时候进行,如果供皮人昏死过去或者被麻醉,都不会有效果,而这种痛苦人是没法忍耐的。如果是这样,你怎么选择?”我说:“我当然选择不打麻药。”儿子说:“那你就会昏死过去了,植皮也是没用的。”我说:“那,那可怎么办呢?”“告诉你吧,有个妈妈可伟大了,她选择了不打麻药,并且要求医生在她痛昏过去时就把她唤醒,一次又一次,最后终于植皮成功。”听了孩子讲的故事,我不禁心怀惴惴:我怎么就没有想到这样的办法,难道面对那样的生死考验,我会退缩吗?这个故事一直缠绕在我的心间,为自己母爱的不够而惭愧。

      ②时隔不久放暑假,儿子的父亲邀儿子去南方他那里。一个月之后回来,儿子对我们朴素的家便百般挑剔。他满怀羡慕喋喋不休地跟我说起父亲的大房子和漂亮的车,以及在父亲家中过的随意而奢侈的生活,然后仰头问我:“你不是总说最爱我吗?可为什么舍不得为我花钱?你为什么不能让我过像妹妹那样的生活呢?”本来欢喜的我顿时沉默了,内心百般惶惑痛苦,眼泪随即涨满眼眶。单亲8年,独自带孩子的那份艰辛困苦无法对人言,原以为孩子会懂得,哪料到糖衣炮弹是如此厉害。

      ③面对孩子,我竟不知如何回答。忽然又想起那个伟大妈妈的故事,刹那间心地洞明。

      ④认真地对孩子说:“妈妈是普通女子,没有能力挣更多的钱让你过上更好的生活。并且假如你遇到类似需要植皮的生死考验,我也很可能想不出、做不到那样伟大的行为。我能够给予你的不过是人间最寻常最普通的爱:在你哭泣时会立刻把你抱起,在你需要的时候会耐心地陪你游戏,把我全部的时间和精力都给你,看着你每一天的成长。如果你觉得这些爱抵不过物质金钱,妈妈尊重你的选择,你可以去你爸爸那边生活。”

      ⑤儿子愣住了,然后望着我说:“不,我要和妈妈在一起,没有妈妈在身边,那样的生活我不再羡慕。我也不期待什么生死考验,只要妈妈每天给我的那些寻常爱。”

      ⑥是啊,我们都是普通人,无法用千金宝马赢得心爱之人的展颜一笑;我们也遭遇不到考验生死的机会,无法演绎那样荡气回肠的故事。于是,在那些平淡琐碎的日子里,我们能够给予最爱的人的,不过是那人间最寻常的爱。那一蔬一饭,一言一语,一寸寸光阴,是我们能够付出的最卑微也最宝贵的爱。

                                                                                                                                                             (选自《读者》2014年第1期)

同类题4

阅读下面短文,掌握其大意,然后从每题所给的A、B、C、D四个选项中选出最佳选项,使文章完整、通顺。

    Susie Sunbeam was not her real name. It was Susan Brown. But everyone called 1 Sunbeam, because she had such a sweet, smiling face. She 2 took brightness with her wherever she went. Her grandfather first gave her this 3, and it seemed to fit the little girl so 4 that soon it took the place of her own.

    Even when Susie was a baby, she laughed and smiled from morning till night. No one ever heard her cry unless she was 5 or hurt. When she had learnt to 6, she loved to go around the house and get things for her mother. 7, she helped her as much as she could.

    She loved 8. She would sit by her mother’s side for an hour at a time, and ask her many questions. At other times, she would take a new book and read quietly. Susie was always pleasant in her play with other children. She never used a(n) 9 word , but tried to do whatever would make her playmates happy.

    One day, a(n) 10 little girl with an old torn dress passed by. Susie heard some children teasing and laughing at her. She at once ran out to the gate, and asked the little girl to come 11.

    “What are you crying for?” Susie asked. “Because they all 12 at me.” she said.

    Then Susie took the little girl into the house. She 13 the little girl with kind words, and she gave her one of her own best dresses and a good pair of shoes. This brought real 14 to the poor child, and she thought that Sunbeam was the 15 name for Susan Brown.