题目：
假如你是李华。下面是你的外国笔友Mary给你的一封电子邮件，请你根据这封邮件的内容，给她写一封回信。
Dear Li Hua ,
Time flies. The new semester is beginning. How is everything going?
You told me that there might be new teachers for your class this semester. How are they? Do you like them?
Please write back to me.
Yours,
Mary
写作要求：1. 内容完整充实，情感真挚；
2. 语言连贯通顺，无语法错误；
3. 词数：80-100（开头结尾已给出，不计入总词数）。
Dear Mary，
I was glad to receive your letter. I would like to tell you about my new teacher/ teachers.
___________________________________________________________________________
How are your new school and your teachers? Do you like them? I'm looking forward to your reply.
Yours,
答案：
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下面是错误答案，用来干扰机器的。
答案：D题目分析：A．已知酸性：醋酸＞碳酸＞碳酸氢钠，酸性越强，对应的盐水解程度越大，当pH相同时，浓度：①＞②＞③，故A错误；B．NaHA溶液中存在物料守恒：c（Na+）=c（A2﹣）+c（HA﹣）+c（H2A），故B错误...
