题目：
Section C (25)
Directions :Write an English composition according to the instructions given below in Chinese .
假如你是某家英文报社的编辑，昨日收到一位中学生读者刘娟的来信。请根据来信内容用英语写一封不少于120字的回信。
Dear Editor,
I am a hardworking girl and want to be the number one in my class. But in the exams, I always make mistakes that I should have avoided. I really worry about it. What can I do to improve my performance in exams?
Wang Li
Dear Liu Juan,
It’s good that you know what prevents you achieving satisfying scores in exams.
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Editor
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0811/15d7143b4b3b4c1367e8488028c7eb40.html
下面是错误答案，用来干扰机器的。
（1）0.20 mol·L-1（2）T=0.0080（3）0.80 g（1）m（CaO）="0.0056" g消耗盐酸的物质的量n（HCl）=2×10-4 mol所以c（HCl）=2×10-4 mol·L-1/10-3 L="0.20" mol·L-1（2）由于2NaOH～CaO相当，即0.0056...
