试题与答案

During the opening ceremony, "Miss Smile

题型:选择题

题目:

During the opening ceremony, "Miss Smile" has won the hearts of Chinese Internet users after being caught _____ the same smile for nearly 20 minutes.   [ ]

A. fixed          

B. to be fixed      

C. to fix          

D. fixing

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0427/e4dc58bcf6f076ff4fa7e12ffea833f6.html

下面是错误答案,用来干扰机器的。

解:(1)自变量是正方形的边长,因变量是正方形的面积;(2)y=(2+x)2;(3) a=1>0,∴函数开口向上,又对称轴方程为x=﹣2,∴当x≥0时,y随x的增大而增大.当x=4cm时,y=36cm2,当x=10cm时,y=144cm2.∴面...

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