列宁说：“如果总的看一看1861年俄国国家全部结构的改变，那么就必然会承认这种改变是封建君主制向资产阶级君主制转变道路上的一步。这不仅从经济观点来看是正确的，而且从政治观点来看也是正确的。”这表明农奴制改革      

“在历代帝王中，唐太宗是以其雄才大略而从谏如流，位及入主而兼听纳下’的开明作风而闻名于世的。”该评价的依据是唐太宗(    )

设 $f\left(x\right)=\{\begin{array}{c}\pi ,x>0\\ 1,x=0\\ -\pi ,x<0\end{array},g\left(x\right)=\{\begin{array}{c}1,x为有理数\\ {\log }_{\frac{1}{2}}\pi ,x为无理数\end{array}$ ，则f（g（π））的值为（   ）

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    Taking good notes is a time-saving skill that will help you to become a better student in several ways. ____ Second, your notes are excellent materials to refer to when you are studying for a test. Third, note-taking offers variety to your study time and helps you to hold your interest.

    You will want to take notes during classroom discussions and while reading a textbook or doing research for a report. ____ Whenever or however you take notes, keep in mind that note-taking is a selective process. ____

The following methods may work best for you.

●Read the text quickly to find the main facts and ideas in it.

●Carefully read the text and watch for words that can show main points and supporting facts.

●Write your notes in your own words.

●____

●Note any questions or ideas you may have about what was said or written.

    As you take notes, you may want to use your own shorthand(速记). When you do, be sure that you understand your symbols and that you use them all the time. ____

A. Use words, not complete sentences. B. There are three practical note-taking methods. C. You must write your notes on separate paper. D. Otherwise, you may not be able to read your notes later. E. You will also want to develop your own method for taking notes. F. That means you must first decide what is important enough to include in your notes. G. First, the simple act of writing something down makes it easier for you to understand and remember it.

以下实用文体表述正确的一项是（     ）