题目类型：
单选题
题目内容
正确答案
C
题目解析
<img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/bd/a3/bda3da2d11ac005cde1b4dda2fcded0e.jpg" style="width: 100%;height: auto;"><img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/c8/5c/c85c4d8b79a3d58b0fe98f072cef72ce.jpg" style="width: 100%;height: auto;">