问题
单项选择题
2,3,10,26,72,( )
A.144
B.196
C.200
D.216
答案
参考答案:B
解析: 和数列变式,从第三项开始,每一项等于前两项之和乘以2。
2,3,10,26,72,( )
A.144
B.196
C.200
D.216
参考答案:B
解析: 和数列变式,从第三项开始,每一项等于前两项之和乘以2。
完形填空。 | ||||
Dick did not live too far away from school, and he liked to 1 to school every day. On his way to school he always went 2 a playground. When it rained, like many other boys, Dick liked playing in the water. One afternoon when the boy came 3 , he was all wet. His mother became very 4 and said, "Don't play in the water after school." The next day he was very 5 again, and his mother became 6 angner. "I'll tell your father 7 you go to play in the water again," she said."And then he'll punish (惩罚) you." The 8 day the boy was dry when he came back from school. "You are a 9 boy today, " his mother said. "You didn't play in the water." "No," he answered. "Because there were 10 older boys in the water, I couldn't play in it.'' | ||||
|