关于隔声屏的作用,以下说法正确的是?()
A.有了隔声屏对减少噪声有一定作用
B.在有隔声屏的路段可以随意按喇叭
参考答案:A
Questions 14-23
A teacher really has eyes in the back of his head.
A. Right B. Wrong C. Not Mentioned
急性腰扭伤多由外力所致,绝大多数发生在()和()等处。