题目

假如你是李华，你的外国网友Jack沉迷于抖音(tiktok)不能自拔，写信向你求助，请你给他回一封电子邮件。内容包括：1）表示理解与关心；2）分析抖音对我们生活可能存在不良影响；3）提出具体建议。注意：1）词数100左右；2）可以适当增加细节，使行文连贯；DearJack, ……Yours,LiHua 答案：Dear Jack, On hearing that you have been addicted to tiktok recently, I feel terribly sorry and can't wait to write this email in reply to your problem. Actually, it is commonly seen that a growing number of teenagers get crazy about tiktok, spending plenty of time watching and sharing videos online, which makes it hard for them to focus on study. However, action must be taken before things get 下表是探究蚂蚁食性的过程，属于科学家探究过程中作出假设步骤的是（ ）步骤1发现一群蚂蚁正在往洞里搬运粮食，心想蚂蚁爱吃哪些食物步骤2根据已有知识和生活经验，推测蚂蚁喜欢吃甜食步骤3在一个培养皿的两端分别放上少许盐和少许糖，放进蚂蚁进行探究步骤4通过几次重复试验，得出蚂蚁爱吃甜的食物A、步骤1 B、步骤2 C、步骤3 D、步骤4