搜题请搜索小程序“爱下问搜题”
问题 选择题

克隆羊“多莉”的出生与甲、乙、丙三只母羊有关，其中甲提供细胞核，乙提供去核卵细胞，丙是代孕母羊，那么“多莉”长得像谁？（　　）

A．丙羊

B．乙羊

C．甲羊

D．甲、乙、丙都像

答案

由分析可知，细胞核是遗传信息库，是细胞代谢和遗传的控制中心．对生物的遗传具有重要意义．因此在克隆的过程中，谁提供了细胞核，克隆出来的生物就像谁．小羊多莉虽然是由丙羊分娩出来的，但长相却一点也不象丙羊，原因就是因为小羊的细胞核不是有丙羊提供，而是来自于甲羊．而遗传物质位于细胞核内．故应该几乎跟甲羊一模一样．

故选：C

阅读理解
任务型阅读。下面是对英国十五岁的女孩的一个调查结果，请仔细阅读，然后根据短文后面的任务
要求作答。
     The following is from a survey of girls at the age of fifteen over Britain. Girls of this age have
different lives these days because they change their lifestyles. Joane Kelly from Birmingham has talked
about the survey:
1. The survey says that the average (平均的) fifteen-year-old girls get ￡5.26 pocket money
every week.
    Joanne: I don't get that much! I get only ￡3 every Saturday.
2. The survey says that the average fifteen-year-old girl's favourite subjects at school are drama
(25%), then maths (19%), cookery (18%), English (17%) and music (13%)
    Joanne: Who are these average fifteen-year-old girls! I hate drama. And I do not like maths either.
3. The survey says that the favourite sports star for fifteen-year-old girls is David Beckham.
He gets 3% more than the number two star, Tim Henman. Two more football players are on
the list, Jamie Redknapp and Alan Shearer.
    Joanne: Oh yes! Beckham is my number one. Even if he is married to Victoria.
4. A usual evening activity. 14% of fifteen-year-old girls watch TV in the evening. 9% tell us
that they telephone their friends and talk to them and the same number listen to music, 8%
watch videos and 5% use a computer.
    Joanne: Yes. Most of my friends watch TV or videos or use a computer in the evening.
任务： 英国布莱顿市布莱顿中学的学生心理咨询中心，准备将该调查结果告知学校的校长，为使调
查结果一目了然，请你帮助该中心把调查结果设计成表格的形式，表达上述内容。校现在表格已基
本设计好，请你在空白处填上适当的单词，每个空格不得超过2个单词。
                                       A (1) ______________ of 15-year-old Girls in Britain
Average pocket money every week ￡ 5.26
The most favourite subject (2)_______________
Other favourite subjects Maths, cookery, English, music
The most favourite sports star (3)_______________
Other favourite sports stars Tim Henman, Jamie Redknapp and Alan
Shearer
The number of girls who usually watch TV in the evening 14%
The number of girls who usually listen to music in the
evening 		(4)________________
The number of girls who usually watch videos in the
evening 		8%
The number of girls who usually watch videos in the
evening 		5%
In conclusion, these days 15-year-old girls in Britain have (5)________________
查看答案
单项选择题

有观众反映在战国到秦朝这一时间的电影《英雄》和《刺秦》中，许多骑马打仗的镜头不符合历史的真实情况。今天看到的兵马俑，绝大多数战马是没有马鞍的，有马鞍的战马一律没有马镫。没有马镫，士兵在马背上就待不住，也使不上劲，所以当时的骑兵没法在马上打仗。
以下哪一个选项是上述论证所依赖的假设( )

A．秦时的骑兵骑着马冲到敌人跟前，然后翻身下马与敌人打仗
B．秦时的陪葬品能够反映当时社会的真实情况
C．在唐代雕刻的昭陵六骏浮雕上，每匹骏马的身上都有马鞍和马镫
D．在历史上，马镫是一件可以彻底释放士兵战斗力的重要军事装备
查看答案