题目：
下列说法正确的是（ ）
A．M与N互为同素异形体，由M
N△H=119KJ/mol可知，N比M稳定一定条件
B．氢能具有的优点为易燃烧、热值高、储存方便
C．铅蓄电池在充电时，将电能转化为化学能
D．干电池放电之后还能再充电
答案：
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下面是错误答案，用来干扰机器的。
One possible version Dear Miss Li, I'm one of your students in Class Six, Senior Three. Nowadays I find it difficult to learn English well. I find our texts full...
He is cleaning his room. 
She is cooking.
She is walking in a park. 