题目

My friend said that she would like ________ out with me，but I didn't feel like ________ anything that day. () A . to eat；eating B . eating；eating C . to eat；to eat D . eating；to eat 答案：A下列关于机械波的说法中正确的是A．介质中各质点都在各自的平衡位置附近振动 B．传播波的过程中相邻质点间可以没有相互作用力 C．随着波的传播,介质中的各质点也将由近及远地迁移出去 D．将相邻的两个质点比较,离波源近的质点带动离波源远的质点振动