（本题6分）简述老年人烧伤的病情特点。
参考答案：
— _____ ?
— The more, the better.[ ]
A. How often shall I feed the animals
B. How much is your car worth
C. How many friends do you want to make here
D. What's the population in China
单段逆流再生技术特点是（）
A.操作复杂
B.再生效果差
C.水热失活性
D.能耗高
