求高手解答,在线等_how吧_百度贴吧
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&签到排名：今日本吧第个签到，本吧因你更精彩，明天继续来努力！
本吧签到人数：0成为超级会员，使用一键签到本月漏签0次！成为超级会员，赠送8张补签卡连续签到：天&&累计签到：天超级会员单次开通12个月以上，赠送连续签到卡3张
关注：114贴子：
求高手解答,在线等收藏
题目1 -- Hi, I'm glad to see you. -- ____________.选择一项：a. Thank you b. Me, too c. I'm glad to hear that d. My name is Mary 题目2 -- I wish you success in your career. -- _______选择一项：a. You think so. b. The same to you. c. Yes, please. d. You are welcome. 题目3 -- How about going fishing? --____________, I have no patience for that.选择一项：a. Pardon b. Apologize c. Sorry d. Excuse me 题目4 －Mary: Oh, dear! I’m starving. I can't walk any farther. －Mike: _________选择一项：a. Let's go to the restaurant across the street and get something to eat. b. Let’s go shopping and buy a lot all at once. c. Jesus, you should have had much more before you went out. d. It’s none of my business. 题目5 --When did you move to ? -- _____________________选择一项：a. This year. b. Next year. c. About three years. d. Three years ago. 题目6 --___________! Welcome to the party. --Merry Christmas! It's very kind of you to invite us.选择一项：a. Merry Christmas b. Happy birthday c. Have a good day d. Congratulations 题目7 --- How do you do? --- _________选择一项：a. Very well. b. Fine, thank you. c. Not too bad. d. How do you do? 题目8 - Let me help you carry the suitcase. - _________选择一项：a. It's OK. I can manage. b. Put it down on the ground. c. I can help you with it. d. It's not very light. 题目9 －Do you mind telling me where you’re from? － .选择一项：a. Sure. I was born in London. b. Not really, you can do it. c. Certainly not. I’m from London. d. Certainly. I’m from London. 题目10 — Could I speak to John Harris, please? —_____________.选择一项：a. I’m listening b. Oh, how are you c. I’m John d. Speaking 题目11 — These are certainly beautiful flowers. Thank you so much. —___________.选择一项：a. No, no. It’s nothing b. You are welcome c. Yes, I think so, too d. Yes, I agree 题目12 ― Would you mind if we asked you for some advice? ― ________________选择一项：a. Thank you so much. b. That's all right. c. What do you want? d. Yes. Please go ahead. 题目13 --- How about going to dinner at the Mexican restaurant tonight? --- ______选择一项：a. Glad you like it. b. That's great! c. Forget it. d. Sorry, I like Mexican food. 题目14 --- This box is too heavy for me to carry upstairs. --- _______.选择一项：a. You may ask for help b. I'll give you a hand c. Please do me a favor d. I'd come to help 题目15 －Is that Mr. Robert Lee?－_____________.选择一项：a. Sorry, speaking b. Hello, what do you want c. Yes, Lee speaking d. I don’t know 题目16 --- I didn't mean to do that. Please forgive me. --- _________选择一项：a. That's all right. b. Thank you. c. Not too bad. d. It's a pleasure. 题目17 --- I'm sorry. I lost the key. --- ________.选择一项：
1楼 19:49&|
a. You are welcome b. No, it's all right c. You are wrong d. Well, it's OK 题目18 --- What's the matter, dear? --- _________选择一项：a. I didn't go to school. b. I have a terrible headache. c. I took the kids shopping today. d. It is a beautiful dress. 题目19 -- Let's have a picnic by the . -- _____________________选择一项：a. That's all right. b. You're lucky. c. Good idea. d. Never mind. 题目20 － Did you use to play the piano? －_____________________选择一项：a. No, I didn't. b. No, I do. c. Yes, I do. d. Yes, I play it every day. 题目21 --- I'm terribly sorry that I've spilled some coffee on the carpet. --- _______.选择一项：a. Sorry b. That's right c. It doesn't matter d. Don't mention it 题目22 --- What's the problem with your bike? --- _________选择一项：a. Nothing serious. b. Sure c. Not at all. d. Good, thank you. 题目23 --- How was your trip to London, Jane? --- ___________. 选择一项：a. I went there alone b. The guide showed me the way c. Oh, wonderful indeed d. By plane and by bus 题目24 --- Paul, __________? --- Oh, that's my father! And beside him, my mother.选择一项：a. what are they doing b. who's talking over there c. which is that d. what is the person over there 题目25 －Guest: Oh, it’s ten o’clock. I’d better go now. －Host: ______选择一项：a. Won’t you stay for another cup of coffee? b. OK. Please walk slowly. c. Why do you want to go now? Don’t you want to stay? d. Yeah, it’s really late. Why not immediately? 题目26 --- Good-bye for now. --- _________选择一项：a. See you. b. The same to you. c. That's OK. d. Long time no see. 题目27 --- I wonder if I could use your computer tonight? --- ___________ I'm not using it right now.选择一项：a. I don't know. b. It doesn't matter. c. Who cares? d. Sure, go ahead. 题目28 --- Congratulations! You won the first prize in today's speech contest. --- ________.选择一项：a. It's a pleasure b. Yes, I beat the others c. Thank you d. No, no, I didn't do it well 题目29 --- Is that seat taken? --- _________选择一项：a. It's very nice. b. I don't think so. c. Please don't worry. d. Why not? 题目30 --- Hello, can you tell me if the library will be open Saturday evening? --- ______. I’ll find out. 选择一项：a. Sorry, I don’t know b. Yes, it will be open c. Hold the line, please d. No, I can’t
2楼 19:49&|
BDBBD A只有第一个帖子的
3楼 10:28&|
贴吧贡献榜 登录百度帐号推荐应用
内&&容:使用签名档&&
为兴趣而生，贴吧更懂你。&或求高手解答，谢谢！_百度知道
提问者采纳
hiphotos://g.baidu.jpg" esrc="/zhidao/wh%3D450%2C600/sign=4a152ae22c2eb938eca903//zhidao/pic/item/21ad0ff3d7ca7acbd5e1.hiphotos://g.jpg" target="_blank" title="点击查看大图" class="ikqb_img_alink"><img class="ikqb_img" src="/zhidao/wh%3D600%2C800/sign=1f1be0c16/21ad0ff3d7ca7acbd5e1<a href="http://g.hiphotos.baidu
不用方程的，满意采纳，谢谢
提问者评价
太给力了，你的回答完美的解决了我的问题！
按默认排序
其他3条回答
能用方程吗？
算式怎么例呢？
我是教高中数学的，小学数学对我很有难度，我想想
等待您来回答
下载知道APP
随时随地咨询
出门在外也不愁L1=0.5m,L2=0.8m,回路总电阻为R=0.2Ω,M=0.04kg,导轨光滑,开始时磁场Bo=1&T,现使磁感应强度以ΔB/Δt=0.2&T/s的变化率均匀增大,试求：当t为多少时,M刚好离开地面._百度作业帮
L1=0.5m,L2=0.8m,回路总电阻为R=0.2Ω,M=0.04kg,导轨光滑,开始时磁场Bo=1&T,现使磁感应强度以ΔB/Δt=0.2&T/s的变化率均匀增大,试求：当t为多少时,M刚好离开地面.
我是这么想的,不知道对不对哈,毕竟我距离高中物理有一段时间了E=S×(△B/△t) = L1×L2×(△B/△t)………………F=B×I×L1=(B+(△B/△t)×t)×E/R×L1=Mg………………M刚好离开地面,导轨光滑就是没有摩擦力,所以就是电磁感应产生的力和M的重力相等
您可能关注的推广回答者：求高手解答_牡丹鹦鹉吧_百度贴吧
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&签到排名：今日本吧第个签到，本吧因你更精彩，明天继续来努力！
本吧签到人数：0成为超级会员，使用一键签到本月漏签0次！成为超级会员，赠送8张补签卡连续签到：天&&累计签到：天超级会员单次开通12个月以上，赠送连续签到卡3张
关注：13,378贴子：
求高手解答收藏
我家宝贝3号下了一个蛋，到现在了还是一个，不知道还下蛋不了？上一窝一共下了2个。是不是基因问题？
自己先抢个沙发坐坐
不是，是喂养问题
一般两天一个，再等等，不急
你再等等吧 一般是隔天一个蛋 你喂什么的
大家来看下我的粮食行吗？
我的也是3号下的，现在两个了
要多注意他的屁股
加点燕麦片 和 黍子
不懂帮顶顶完水经验 我还是10级以下，靠签到已经不够了，玩了半天贴吧终于把水技琢磨透了：你每到一个帖子就粘贴这句话，十五天就到了11级”...我彻底恍然大。悟！吧主再也不用担心我的经验了。我是路过的，我什么都不知道，不过我已经精秃了，假如你每天签到拿4经验，18级=75000天，如果从1岁开始签到，那100年=36500天，你差不多要活200年保持每天签到（谁知道200年后还有没有签到这玩意），如果你每天再水4经验，时间减半，但考虑现实，你不可能再活100年，取50年吧，你就要每天水16经验，可能你是个勤快的人，每天水32经验，那就需要25年！！！再如果你是个大水怪，每天水64经验，那就只要12.5年！！！还如果你个心急的人，每天水128经验，你只要6.25年！！！！假如你已经急不可耐了，每天水256经验，那你碉堡了，只要3.125年！！！当然，你会觉得3年还是太远了，每天你闲的蛋疼，忙忙碌碌的水512经验，碉堡了，你只需要1.5625年，只比1年半多一点！！！什么！！你还不满意，那你觉得你可能一天水1024经验吗，可能吗！！可能吗！！！据说回复100字或者一百字以上可以得到11~30经验，真的很棒。。。。那么，按照队形，点击复制，把我的话复制一片，拿经验妥妥的秘籍。老师憋了半天语重心长告诉我：”你每到一个帖子就粘贴这句话，十五天就到了11级　╭══╮┌═════┐╭╯让路║═║水军专用车║└══⊙═⊙═~----╰⊙═⊙╯╭══╮┌═════┐╭╯让路║═║挽尊专用车║└══⊙═⊙═~----╰⊙═⊙╯专业挽尊三十年，挽过的楼主可绕地球十圈，品质有保障。你，值得拥有！　　　水军┏┳━━━━━━━━━━━━┓┃┃████████████┃┃┃███████┏━━┓█┃┣┫███████┃水┃█┃┃┃███████┃帝┃█┃┃┃███████┃真┃█┃┣┫███████┃经┃█┃┃┃███████┗━━┛█┃┣┫████████████┃┃┃████████████┃┗┻━━━━━━━━━━━━┛看，是水之大帝，突破了水的极致，他竟然水到了19级！！！！”万丈高楼之上，一个巍峨的身影俯瞰众生，睥睨十万贴吧。“水之大帝要干什么？难道他要水到传说中的——二十级？！！！！”人们惊恐万分。只见
今天下了第二个蛋，不知道还会下不？还有下蛋间隔这么长时间正常吗？
登录百度帐号推荐应用
为兴趣而生，贴吧更懂你。或}