课文填空

    If you saw a father (pat) his son the back smiling happily, what would you think was on? You would probably think that the father was his son on (do) something well, maybe (pass) an exam or winning a race. You would know what was going because you understood the message (convey) by the father's body language. the world, a pat on the back and a smile usually means," Well done".

You have grown up and you need to take r for your actions.

相同条件下，下列气体的密度最大的是：（   ）

阅读下面的材料，根据要求写作。

作为年度“汉语盘点”活动重要组成部分，2020年12月11日，国家语言资源监测与研究中心发布“2020年度中国媒体”。本次发布的十大流行语依次为新冠肺炎、抗疫、复工复产、民法典、网课、双循环、人类卫生健康共同体、抗美援朝70周年、六稳六保、嫦娥五号。

请从上述十大流行语中选择两个或三个来表达你对当今这个时代的认识，写一篇文章。要求选好流行语，使之形成有机的关联；选好角度，明确文体，自拟标题；不要套作，不得抄袭；不少于800字。

如果a g某气体中含有的分子数为b，则c g该气体在标准状况下的体积是(式中N_A为阿伏加德罗常数的值) (   )

阅读下面这首词，然后回答问题。

更漏子·本意

王夫之（明末清初)

斜月横，疏星炯，不道秋宵真永。声缓缓，滴泠泠，双眸未易扃。

霜叶坠，幽虫絮，薄酒何曾得醉！天下事，少年心，分明点点深。

（注）扃：喻闭门，引申为闭眼成眠。

已知一个关于x，y的二元线性方程组的增广矩阵是 ， 则x+y= ．

在一定温度、压强下，1体积X₂（气）和3体积Y₂（气）化合生成2体积的气体化合物，则该气体化合物的化学式为（    ）

The t of this conference is the development of education and they will have a discussion about it this afternoon.

已知三阶行列式 ，则元素3的代数余子式的值为．

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线，并在该词下面写出修改后的词。

注意:1）每处错误及其修改均仅限一词;

2）只允许修改10处，多者(从第11处起)不计分。

    One day, my little brother bought a ice cream in the street, enjoying eating it. Unexpect, he saw his friend coming towards him, so he hurriedly hid the ice creams behind him. After he greeted his friend, they begin to talk. His friend had his dog with her. When he stopped talk with my brother, his dog moved around. The dog was such glad to find the ice cream in my brother's hand and it began to eat it with a great pleasure. My brother felt embarrassing that he hadn't shared the ice cream with his friend, he gave the ice cream to the dog. Then he bought another two for his friend and himself.

She looked at his fingers with wonder as they turned each page and suddenly reached for his hand. She was amazed by his     and the softness and warmth of his skin.

下列有关化学用语使用正确的是（   ）

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.

若关于x，y的二元一次方程组=至多有一组解，则实数m的取值范围是 ．

下列表示错误的是（   ）

短文改错

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。作文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(^)并在其下面写出该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下面画一横线，并在该词下面写出修改后的词。

注意：1．每处错误及其修改均仅限一词；2．只允许修改l0处，多者(从第11处起)不计分。

Dear Jim，

    I'd like to invite you for dinner in a Chinese restaurant in Los Angeles．I can imagine how surprising you are! In fact，I am there visiting my uncle，who happened to be working in the city at present．

    The Chinese restaurant naming New Panda Buffet provides genuine Chinese food，where many diners have given 5-star reviews．It is located at 5120 Rodeo Rd，Los Angeles．Could you come at 6 p.m. on Friday?

    By the way, I will present you with a go set then．I really appreciate that you have done to help me with my English during the past two years．But you，I would not have made such a great progress in English．

    Looking forward to you early reply!

Yours,

Li Hua

行列式的值是 

方程组的增广矩阵是 ．

下列说法正确的是（   ）