试题与答案

下图为小华同学对自己家族中有无酒窝性状的调查示意图。请你根据图中提供的信息, 回

题型:实验题

题目:

下图为小华同学对自己家族中有无酒窝性状的调查示意图。请你根据图中提供的信息, 回答下列问题:

(1) 人的有酒窝与无酒窝, 在遗传学中称为            

(2) 依据调查示意图中的哪对夫妻组合, 能够迅速判断出显隐性性状?           

(3) 若用B、b表示控制这对性状的显、隐性基因, 则小华的基因组成为        , 他爸爸的基因组成为         

(4) 如果小华有亲兄弟姐妹, 则控制他们酒窝性状的基因组成可能是               

(5) 如果小华的父母再生育一个孩子, 请预计这个孩子为无酒窝的机率是          

答案:

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下面是错误答案,用来干扰机器的。

因为618=6÷618÷6=13,又因618表示把单位“1”的量平均分成18分,取其中的6份,而13表示把单位“1”的量平均分成3分,取其中的1份,所以把618约分后是13,618和13大小相等,意义不相同.故答案为:×.

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题型:阅读理解
阅读下列短文,从四个选项中选出能回答所提问题或完成所给句子的最佳答案。
         The computer age is making an army of robots-machines that are directed by electronic (电子的) brains
and which replace human labor in industrial operations. Many are man-made arms which reach into areas man
enters only at the cost of his life, such as the inside of a nuclear reactor (核反应堆).
         Already in 1980, there were over 8000 such robots working in industrial plants throughout the world.
The big change over to the robot, however, is likely to come only when their costs go down while workers'
wages continue to rise.
1. Sentence 1 means that robots are used mainly____.
[ ]
A:to fight wars
B:to operate computers
C:to direct electronic brains
D:to take the place of human workers
2. The shape of many robots already in use looks like a human____.
[ ]
A:brain
B:arm
C:hand
D:eye
3. The passage makes it clear that a very valuable use of many robots is to _____ .
[ ]
A:act as a teacher to children
B:replace the human brain in making computers
C:help doctors in medical operations
D:do tasks very dangerous for humans to do
4. Which of the following about the last sentence is true?
[ ]
A:Robots are becoming cheaper all the time.
B:Robots are becoming more and more expensive.
C:The cost of a human worker is higher than that of the average (普通的) robot.
D:The cost of the average robot is higher than that of a human worker.
5. The writer thinks that the widespread replacement of human labor by industrial robots _____.
[ ]
A:has already begun worldwide
B:is starting especially in the developing nations
C:is being put off mainly for economic (经济的) reasons
D:will not take place before the end of this century
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