简述心肌与横纹肌的区别?
参考答案:心肌细胞单核;心肌细胞具分支;心肌具闰盘。
根据情景,补全对话。
A: What are these?
B: 1
A: 2
B: Yes. I like them very much. 3_ _
A: No, I don't like oranges.
B: 4
A: I like apples. 5
B: Yes, I like them,too.
旅游者有权审核活动计划,但对已经明确规定在旅游协议书上的参观游览内容无权提出修改意见。( )