假设你叫李华，你的朋友Jenny向你询问有关如何保持健康的问题。请你给她发一个电子邮件，提一些建议。内容要点如下：
注意合理饮食，要多吃鱼、肉、豆类等，特别是新鲜蔬菜和水果，不要吃太多甜食。
注意锻炼身体，劳逸结合，多参加体育锻炼。
3、保证充足的睡眠，不要熬夜，每天至少睡8个小时。
3、保证充足的睡眠，不要熬夜，每天至少睡8个小时。
注意：1、词数100左右。2、注意行文连贯。3、开头与结尾已经写好。
Dear Jenny,
How nice it is to hear from you! In your letter you asked me how to keep healthy. Here is my advice.
________________________________
________________________________
___________________
Yours,
Li Hua

为除去危害农作物的某种害虫Ⅰ而引入蜘蛛后，对两个种群进行调查，得出下图所示结果，下列叙述正确的是

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A．引入蜘蛛后，该农田生态系统的一条食物链为：害虫→蜘蛛→鸟B．在B期间，因害虫数量减少而导致蜘蛛数量下降C．在C期间以后，蜘蛛和害虫数量将一直保持不变D．在C期间，害虫数量仍高于蜘蛛数量，说明生物防治的效果不明显

以下是一本图书的基本信息及相关报道

要求：
根据以上信息写一篇图书介绍，内容包括：
1.图书的基本信息
2.图书的相关报道

阅读下面的短文
I was pushed into writing the "Top ten problems teenagers face" after I attended a school program, where I had the opportunity to interact with many teenagers. Each conversation was only adding one more item to the list of problems.
About two thirds of girls in Grades Nine to Twelve "worry about their appearance." While there were no gender differences in worries about school, girls worry about getting along with parents and what to do when they are older. Girls are proven to worry more about personal problems, romantic relationships, being liked by other kids and being concerned about what kind of person they are. In fact, the only thing boys worry about more than girls is succeeding in their physical activities.
What parents need is to look at ways to help teens and take responsibility for what we are exposing our teens to right now. We cannot afford to ignore the parental duties of bringing them up well from the time they are little. Televisions, computers and other gadgets that they spend most of the time on cannot give them the nurturing that only parents can.
【写作内容】以约30词概括上文的主要内容。

近年来，网络用语更新迅速。青少年在日常谈话和上网聊天时喜欢使用前卫的语言，如“肿么了”、“有木有”等。这一现象引发了人们极大的关注与讨论。请根据下列内容提示，用英语写一篇短文反映现象并表达个人观点。

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　　　　　　不赞同

注意：1. 文章开头已给出，不计入总词数；

In recent years, Internet language has been updated faster and faster. Many young people like to chat in their daily talk and Internet chatting with these words such as “zhong me le” and “you mu you”. ______________________

下列是池塘中一些常见的生物，其食物链顺序正确的是①鱼类②藻类③水生甲虫④池边杂食动物⑤水蚤

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A．④→①→②→③→⑤B．②→⑤→③→①→④C．③→②→①→⑤→④D．②→⑤→④→③→①