选词填空，阅读下列短文，用方框内所给单词的正确形式填空

    As a student, what does it mean " to be good"? TheCode of Conduct for Primary and Middle School Students (《中小学生守则》) holds the answer.

    Last year, a new draft (草案) code came____, replacing the old content. There are some important ____. Big phrases like"have deep love for your motherland, the people and the Communist Party of China" are not there anymore. The new code tells students to respect the national flag and national emblem (国徽)____. It also ____students to "know about China's history".

    Also, the new code asks students to "lead alow-carbon (低碳的)____"，"takepart in voluntary work"， and "control the time you spend online". The change on brave actions ____draws attention. The old code told students to act bravely when they saw people ____rules. But the new code asks students to learn to protect ____and ask for help.

    Many teachers are ____to see these changes. Students say they know____to do when they face some problems.

材料一：北魏统治者面临着这样一个严峻的问题：曾经一度统一北方的前秦在淝水一战失败后迅速崩溃，北魏应如何巩固统治，而不至于重蹈覆辙，从道武帝到太武帝，都在为此而努力，矛盾的焦点集中在改革鲜卑旧俗和加速汉化上。在这方面做出重大贡献的是文明太后冯氏和孝文帝拓跋宏。

——樊树志《国史概要》

材料二：清代史学家赵翼在《廿二史札记》中说：“盖帝优于文学，恶本俗之陋，欲以华风变之，故不惮为此举也。然国势之衰，实始于此。”而当代著名史学家黄仁宇却认为，孝文帝改革“不期然地做了中国再统一的工具”。

请回答：

下列各能源中，属于可再生能源的是（  ）

下列各组句子加线字的意义和用法相同的一项是（  ）