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/0c/16/0c1644cf42b8985efdefbd2d02789993.png" style="width: 100%;height: auto;"><img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/e1/96/e196eb45a11aca48154b7a77a95cc35f.png" style="width: 100%;height: auto;">