为流动人口缴纳的社会保险有（）
A.工伤保险
B.医疗保险
C.意外险
D.失业保险
E.养老保险
参考答案：A, B, D, E
根据句意和首字母，填写所缺单词。
1. He is a v_______, and he often treats some animals.
2. His father is able. He can s_______ this problem by himself.
3. His grandfather can't walk and has to sit in a w_______.
4. I love dogs because they never c_______ and they're grateful.
5. He is my best friend. We all t_______ in him.
节水型城市技术考核指标中工业用水重复利用率标准是多少？
