《***的学习人生》一文指出，***是一个终生与书为伴的人，他热爱学习，热爱读书无人能比，***说“我一生最大的爱好是读书，饭可以一日不吃，觉可以一日不睡，书不可以一日不读”这启示我们（    ）

①学习没有终点，我们终生都需要学习                           ②学习就是给生命添加养料

③学习是美好的，我们要充分享受学习带来的快乐       ④多读书，多学习就可以成为伟人

如图，某人为了测量小山顶上的塔ED的高，他在山下的点A处测得塔尖点D的仰角为45°，再沿AC方向前进60m到达山脚点B，测得塔尖点D的仰角为60°，塔底点E的仰角为30°，求塔ED的高度．（结果保留根号）

   Everyone has worries. How do you deal with your worries? There is always something you can do to help yourself feel less worried. Sitting there worrying is no fun and it won't solve your problems.
   Grades at school are often a top worry for kids. ff you worry most about grades, ask yourself these questions:
●  Why are grades important? What do grades mean to me?
●  How do I get ready for class? Do I go over my notes even when there isn't a test?
●  Do I have a good place to do my homework?
●  Have I tried different ways of studying?
   If your worry is about a fight you had with your friend, you might write down al! the things you could do-write a note to him or her, invite him or her to watch a basketball game, say sorry to him or her and so on. Once you have a list of things you could do, you can choose one thing that could get your friend back.
   You can ask for help when you're worried. You can find someone to talk to, such as your parents, friends, and teachers.

①能对腐败分子造成威慑，从根本上消除腐败

②说明反腐倡廉、依法治国离不开广大人民群众的支持和参与

③网络监督是依法治国的重要环节

④依法行使公民监督权，有利于维护社会的公平正义