原创 英語學習第66課 Don’t be so sure
Roy: Where are you going to spend your holidays this year, Harry? Harry: We may go abroad. I’m not sure. My wife wants t
2020-07-20 16:18:15
原创 matlab使用最小二乘法擬合平面
最小二乘法（又稱最小平方法）是一種數學優化技術。它通過最小化誤差的平方和尋找數據的最佳函數匹配。利用最小二乘法可以簡便地求得未知的數據，並使得這些求得的數據與實際數據之間誤差的平方和爲最小。 代碼如下; function [C] = le
2020-07-19 16:14:11
原创 英語簡單學第65課miles an hour
Ann: Look, Harry1! That policeman’s waving to you. He wants you to stop. Policeman: Where do you think you are? On a rac
2020-07-19 16:14:11
原创 英語學習第64課A famous actress
Kate: Can you recognize that woman, Millie? Millie: I think I can, Kate. It must be Karen Marsh, the actress. Kate: I
2020-07-18 16:14:18
原创 英語學習第62課A trip to Australia
Bill: Look, Scott. This is a photograph I took during my trip to Australia. Bob: Let me see it, Bill. Bob: This
2020-07-16 22:04:35
原创 英語學習第63課Tea for two
Susan: Can’t you come in and have tea now, Peter? Peter: Not yet, dear. I must water the garden first. Susan: Do you h
2020-07-16 22:04:35
原创 第60課A true story
Do you like stories? I want to tell you a true story. It happened to a friend of mine a year ago. While my friend, Geor
2020-07-14 20:58:40
原创 英語簡單學第61課The man in the hat
Customer: I bought two expensive dictionaries here half an hour ago, but I forgot to take them with me. Manager: Who se
2020-07-14 20:58:40
原创 英語簡單學第59課Tommy’s breakfast
When my husband was going into the dining-room this morning , he dropped some coins on the floor. There were coins ever
2020-07-13 16:15:29
原创 第58課Not …
Helen: Isn’t there anyone at home? Jim: I’ll knock again, Helen. Everything’s very quiet. I’m sure there’s n
2020-07-12 16:11:42
原创 英語簡單學第57課small change
Conductor: Fares please! Man: Trafalgar Square please. Conductor: I’m sorry, sir. I can’t change a pound note. Haven’t
2020-07-11 16:11:25
原创 英語簡單學第56課The most expensive model
MR.FRITH：I like this television very much. How much does it cost? ASSISTANT：It's the most expensive model in the shop. I
2020-07-10 16:12:01
原创 英語簡單學第55課A good idea
Betty: Shall I make some coffee, Jane? Jane: That’s a good idea, Betty. Betty: It’s ready. Do you want a
2020-07-08 21:08:51
原创 英語簡單學第54課 It’s too small
Assistant: Do you like this dress, madam? Lady: I like the colour very much. It’s a lovely dress, but
2020-07-08 21:08:51
原创 英語簡單學第53課 Full of mistakes
THE BOSS：Where's Sandra, Bob?I want her. BOB: Do you want to speak to her? THE BOSS：Yes, I do.I want her to come to
2020-07-07 17:59:10