谢谢最早的镜子是水面，后来人们发明了青铜镜。中国古代的青铜镜是十分著名的。估计已有一千八百多年的历史了。不仅在国内普遍使用，而且还销往日本、朝鲜等。唐太_百度作业帮
谢谢最早的镜子是水面，后来人们发明了青铜镜。中国古代的青铜镜是十分著名的。估计已有一千八百多年的历史了。不仅在国内普遍使用，而且还销往日本、朝鲜等。唐太宗李世民有句名言“以铜为镜可以正衣冠，以古为镜可以见兴衰，以人为镜可以知得失矣。”这里的“以铜为镜”指的便是青铜镜。
在埃及，也很早就有青铜镜了。此外，欧洲人曾造过银镜，俄国人制造过钢镜。然而青铜镜毕竟太过晦暗，银镜太贵，钢镜又太容易生锈。现在人们使用的这镜子，都是又亮、又大的玻璃镜。1、上文说明的中心是（
B、各种镜子
C、镜子的历史2、用文中的词语概括下面镜子的特点。
①青铜镜______
②银镜______
③钢镜______
④玻璃镜______
3、上文是按介绍几种镜子时，主要说明的顺序是_______________________；详细说明的内容是_________。4、“以人为镜可以知得失矣。”你怎样理解这句话？
______________________________________________________________。
▇爱新觉罗▇牨
1.A2.a晦暗；b贵;c容易生锈；d亮3.时间顺序；详细说明了镜子的发展历史4.和其他人对比才知道自己的得失
扫描下载二维码数学题目求详细解答过程.谢谢急急急学校举办艺术节，在操场一边按“1红、2绿、3黄、4蓝”的顺序插彩旗，则第25个彩旗是（
）颜色的.A.红
D.蓝大小两个数之_百度作业帮
数学题目求详细解答过程.谢谢急急急学校举办艺术节，在操场一边按“1红、2绿、3黄、4蓝”的顺序插彩旗，则第25个彩旗是（ & & & & & &）颜色的.A.红 & B.绿 & & & & &C.黄 & & & &D.蓝大小两个数之和为50.886，较大数的小数点向左平移一位就等于较小的数，则较大数为（ & & & & & & ）A.46.25 & &B.46.26 & & C.46.15 & &D.40.26一个等腰三角形，一边长是30厘米，另一边长是65里面，则这个三角形的周长色（ & & & & & & ）。A.125厘米& & & & B160厘米& & & &C125厘米或160厘米 & & & D无法确定需要第二题和第三题的详细过程.谢谢
答案是ABB2.逐个检验46.25+4.625=50.875
46.26+4.626=50.8863.两边之和大于第三边，如果两腰均为30，那么30+30=60
1、【C】；（是1个红旗，2个绿旗，3个黄旗，4个蓝旗吗？如果是这样，就选C，否则选A）2、【B】；3、【B】
1 选C2 选B
根据50.886的千分位排除A,D，然后试试B是对的3 选B
因为三角形两边之和大于第三边
扫描下载二维码明天得用英语发表,求英语牛人帮忙回答一下下面的问题~谢谢~1.“下面由我来给大家继续发表” 这个用英语怎么说?2.用英文说“第一题”的时候是question number one还是question one?还是都可以?3._百度作业帮
明天得用英语发表,求英语牛人帮忙回答一下下面的问题~谢谢~1.“下面由我来给大家继续发表” 这个用英语怎么说?2.用英文说“第一题”的时候是question number one还是question one?还是都可以?3.发表结束的时候说"That's all what we have. thank you for listening"可以吗?
1.“下面由我来给大家继续发表”(Next,)Allow me to proceed the presentation.2.如果是自己拟的问题,两者都可以.如果是回答别人的问题则须要加上the first.3.结语：That`s all for my presentation(speach).或That`s all,thank you for listening!
其他类似问题
1. Next,,it's my turn to make the presentation.（不知道你发表什么，所以笼统地说进行称述）2. 两种表达都是对的3. 结束说“That's all. Thank you for your attention."
前面的人都说了，我是打酱油的
扫描下载二维码求40道简单的初一英语题,谢谢了_百度作业帮
求40道简单的初一英语题,谢谢了
路飞海贼团216
1. I like watching news ____ TV _____ the evening.
2. Thanks a lot _____ helping me _____ my math.
3. We have sweaters ____ all colors _____ ￥50 each.
4. He listens ____ the teacher _____ two hours.
5. What do you do ____ the morning ____ October 1st?
6. Do you like to play ______ your dog _____ weekends?
7. There are some words ____ the card, “Best wishes _____ Teachers’ Day!”
8. A friend _____ mine shows me a photo _____ his family.
9. I watch TV ________ 8:00 _______ 10:00.
10. Jim gets _______ school ______ bus.
11. He buys sweaters ______ a man and sells them _____ others(他人).
12. I get up at ______ 7:00. How _______ you?
13. Please come and have a look _____ our clothes _____ sale.
14. Please write and tell me _____ your life _____ China.
15. Mr. Johnson is strict _____ us. But all ____ us like him very much.二、选择填空：
1. I like _____ books.
A. looking
B. reading
D. look at
2. Let’s ______ home.
B. to stay
C. stay at
D. to stay at
3. We clean our room ______ every Sunday afternoon.
4. ______ late next time, Tom.
A. Aren’t
C. Can’t be
D. Don’t be
5. What about _____ to give him a hand?
6. What do you often have ____ dinner?
7. Summer is _____ June _____ August.
A. between, and
B. from, to
C. from, and
D. in, and
8. We sell socks ___ only two dollars.
9. Lily and Lucy ____ a picture book.
D. to have
10. He can _____ very well. He wants to join the ____ club.A. swims, swim
B. swim, swim
C. swimming, swimming
D. swim, swimming
11. This is ______ car, and _____ number is 256780.
A. my, its
B. my, it’s
12. _____ you ______ to play football now?A. Are, wanting
B. Do, want
C. Can, want
D. Does, want
13. _______. Is this your backpack?
A. I’m sorry
C. Excuse me
14. I can speak _____ English.
A. a little
15. What color are her ______?
16. Do you like _______?
A. play football
B. playing football
C. plays football
D. playing the football
17. Mr. and Mrs. Black ______ very young.
D. look at
18. I have ____ aunt and ___ uncle in Hong Kong.
19. Who is the boy ____ red?
20. He’s a friend of my _______.
B. father’s
C. fathers’
D. fathers
21. ____ is interesting to eat breakfast in a hotel.
22. Do you know ____ boy in red? Yes, he is ____ funny boy.
D. the, the
23. —Is that your pen?
—Yes,__________.
A. this is .
C. it is .
D. that is 24. Jim ____ a boy.
____father is a worker (工人)
25.—______________?
What this in English?
B. What color is it?
C. What’s that?
D. What this? 三、句型转换：
1. He does his homework every morning. (改为否定句)He _____ ______ his homework every morning.
2. The little boy has two cups of milk for lunch. (对画线部分提问)______ ______ milk _____ the little boy _____ for lunch?
3. What sport do you like best(最)? (改为同义句) →________ your __________ sport?
4. Are you and your parents happy? (作否定回答)
No, _______ ________.
5. I can dance. (改为一般疑问句) →_______ _______ dance?
6. Ann has bread and salad for lunch. (对画线部分提问)______ _______ Ann _______ for lunch?
7. We do our homework in the evening. (改为一般疑问句)______ ______ ______ your homework in the evening?
8. He goes to school by bus. (对画线部分提问)_____ ______ he ______ to school?9. Jack likes to eat chicken very much.（对画线部分提问）________ ______ Jack ______ to eat very much?10. The baseball is under the bed . （对画线部分提问）→________ _______the baseball?11. Please open the door . （变否定句）→Please ________ ________ the door.12. There is one student in the room . （对画线部分提问）______ ______ ______are there in the room?13. It’s seven twenty now. Let’s go home.（改为同义句） It’s ________ ________ seven now. Let’s go home.14. Are these pants black ?（变肯定句）→ ________ pants _______black.15. What’s the time ?（改为同义句）→_______ _______ ______ _______?16. The jacket is 30 yuan.
（对画线部分提问）
→_______ _______ ______ the jacket?
17. Where is he from? （改为同义句） →Where _____ he _______ from?
18. He is a very happy boy. （改为感叹句）→_______ ________ _______ boy he is!
19. She goes to school by bus. (改为同义句) →She ______ a bus _____ school.
20. Where do you come from? Can you tell me? (合并句子)
→Can you tell me ______ _______ ______ from?四、词汇： A) 根据句意和首字母提示写出单词.
1. –Do you have a c____________?
–Yes, I often play games on it.
2. On w____________, I often go to movies with my friends.
3. What c_______ do you want to join?
4. September comes after O____________.
5. The t________ month is December.
6. November comes b_______ December.
7. –Who is your f_________ teacher?
–Mr. Wang. I like him very much.
8. In America, school s_________ at eight-thirty.
9. The l______ day of the week is Saturday.
10. May I k______ your e-mail address? B) 用所给词的适当形式填空：
1. Do you want to be a _____________(music)?
2. He _________(watch) TV in the evening.
3. Mr. and Mrs. Green have three ___________(child).
4. I am __________(real) busy today.
5. Our office is on the ________(nine) floor(层).
6. Please eat more vegetables to keep(保持) ____________（health）.
7. My sister _______(like) blue very much.
8. I eat some _________(tomato) and a lot of ________(broccoli) every day.
9. She _______(have) some questions to ask.
10. Best _______(wish) for Teachers’ Day!
答案：一、1. on, in
2. for, with
3. in, for
4. to, for
6. with, on
7. on, for
9. from, to
10. to, by
11. from, to
12. about, about
13. at, on
14. about, in
15. with, of二、1-5, BCADB
6-10, DBBBD
11-15, ADCAB
16-20, BCCBB
21-25, CBCCB三、1. doesn’t, do
2. How, much, does, have
3. What’s, favorite
4. we, aren’t
5. Can, you6. What, does, have
7. Do, you, do
8. How, does, go
9. what, does, like
10. Where, is11. Don’t, open
12. How, many, students
13. twenty, past
14. These, are
15. What, time, is, it16. How, much, is
17. does, come
18. What, a happy
19. takes, to
20. where, you, come四、A) 1. computer
2. weekends
4. October
5. twelfth
7. favorite
B) 1. musician
2. watches
3. children
6. healthy
8. tomatoes, broccoli
10. wishes
其他类似问题
chinese？ b:yes2A：你好B：你好3A:再见 B：再见以此类推咯~
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