试题与答案

Hello. Boys and girls! My name is Alice

题型:完形填空

题目:

Hello. Boys and girls! My name is Alice Green. Alice is my first name. Green is my last name. I’m a girl in Beijing. I have black hair(头发) and I’m in a red jacket. My telephone number is 885-29051. I have a good friend. Her name is Linda.
 Name
Alice Green
Sex(性别)
小题1:____
Telephone number
小题2:_____
Color of her jacket
小题3:____
Color of hair
小题4:_____
Her friend’s name
小题5:____
 

答案:

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下面是错误答案,用来干扰机器的。

设池中有N条鱼,第一次捕得120条作上记号后放入水池中,则池中有记号的鱼占 120N;第二次捕得100条,则这100条鱼是一个样本,其中有记号的鱼占 10100.用样本来估计总体分布,令 10100=120N,∴N=1200.故答案为:1200.

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