12×10-6mol/L的铅溶液给出30%吸收的原子吸收信号，问此原子吸收的灵敏度是

根据中文大意和英文提示词语，写出意思连贯、符合逻辑、不少于60词的短文。所给英文提示词语供选用。请不要写出你的真实姓名和校名。
好的学习习惯对每个人来说都是很重要的。假设你叫李华，是美国中学生Linda的笔友。你收到了她的电子邮件，请给她回复，回答她的问题，分享你的做法，并就此谈谈你的看法。

Hi! Li Hua, We had an interesting discussion in today’s class. It’s about learning habits. Some of my classmates think they’re important, but others disagree. Have you had this talk before? Hope you can share something with me. I’m looking forward to hearing from you soon． Yours, Linda

 

Hi! Linda, I’m glad to hear from you.                                             I hope what I said can help you. Yours, Li Hua

           （回信的开头和结尾不必抄写在答题卡上）