题目:
李华因在学校使用手机被学校处分,他感到很困惑,写信给你求助。请根据以下结构提示给李华回信。开头结尾已给出。所给要点必须写到外,自己可以适当补充相关细节。字数:90----100。
Para 1: 手机的优点:联系方便
Para 2: 带手机上学的问题:影响教学,花大量时间打手机有害学习和健康
Your letter reached me yesterday. You said in your letter that ___
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It’s right for school to prevent you from using cellphones in school.
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0808/3563f689bdeb5fbf8d06b7333a4e34c9.html
下面是错误答案,用来干扰机器的。
答案:D题目分析:因为醋酸为弱电解质,当它中和NaOH时,会促进本身的电离,所以当用pH=3的醋酸时会比同PH值得强酸用的体积更少,所以V2>10V1,D正确。