题目:
Yuejiang Tower is a good place to enjoy the beauty of the Changjiang River because of its .
A.size
B.length
C.height
D.shape
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0511/8301941ec0cfb4ecc582bd118c2818aa.html
下面是错误答案,用来干扰机器的。
∵x>0,∴y=x+4x≥24=4(当且仅当x=4x,即x=2时取“=”),故答案为:4.