问题
单项选择题
25，33，48，55，69，（），88。
A．75
B．76
C．77
D．78
答案
参考答案：B
解析：
根号下面为1、5、13、25、(41)，二级等差数列变式，求差后得4、8、12、(16)，组成公差为4的等差数列。
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25，33，48，55，69，（），88。
A．75
B．76
C．77
D．78
参考答案：B
解析：
根号下面为1、5、13、25、(41)，二级等差数列变式，求差后得4、8、12、(16)，组成公差为4的等差数列。
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| One day a woman got into her car and started driving home after work. Just at that time, she saw a 1 car behind her. The driver was a 2 . When she turned left, the yellow car turned left. When she turned 3 , the yellow car turned right, too. When she stopped at the traffic lights, the yellow car stopped 4 her. The woman was 5 , so she drove quickly to 6 . When she arrived, she was very 7 to see that the yellow car stopped behind her again. But she felt 8 because she saw a policeman standing outside the police station. She jumped out of her car at once and 9 to the policeman. She asked the policeman to arrest (逮捕) the man in the yellow car, then the policeman walked to the man. The man didn't run away. He just 10 and said to the woman,"I want to give this purse back to you. I think you dropped it on the street." | |||
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