A:Goodmorning!1.B:YesIwanttojointhechessclub.A:Good2.B:David.A:3.B:I'mtwelve.A:4.B:Mytelephonenumberis435-201.A:5B:Yesalittle.A:Hereisacardpleasefillitout.B:Thankyou.A
A: Good morning! 1.
B: Yes I want to join the chess club.
A: Good 2.
B: David.
A: 3.
B: I'm twelve.
A : 4 .
B: My telephone number is 435-201.
A: 5
B: Yes a little.
A: Here is a card please fill it out.
B: Thank you.
A: You're welcome.
A. What's your name?
B. How can we contact you?
C. Can you play chess?
D. I can play chess.
E. How old are you?
F. What can you do?
G. Can I help you?
1 〜5 GAEBC
a=xa+a=a+x2a=a+x2a-2x=a+x-2x2(a-x)=a-x2=1到底a=xa+a= 2020-03-30 …
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数集A满足条件若a∈A则有(1+a)/(1-a)∈A(a≠1)数集A满足条件若a∈A则有(1+a) 2020-04-05 …
1.(a^2+3)(a-2)-a(a^2-2a-2)=?2.(3/5a^5b^3+9/5a^7b^ 2020-04-27 …
基本不等式超费解130已知a>b>0,求a2+1/(a*b)+1/[a*(a-b)]的最小值.a2 2020-05-13 …
设A为n阶方阵且满足条件A*A+A-6E=0,证明:A-E及A+3E可逆,并求它们的逆.设A为n阶 2020-05-14 …
设集合A={1,a,b},B={a,a^2,ab}且A=B,求实数A,B的值因为集合需要满足互异性 2020-05-15 …
已知2a=5b,求a:(a-b)的值. 2020-06-27 …
假设集合A满足以下条件:诺a∈A,a不等于1,则1-a分之1属于A若a属于A,则1-a分之一属于A 2020-07-03 …
递回关系式的运算公式(数列)以下是推导一个公式"a=a+r(1-p^n)/(1-p)"的过程a=p* 2021-01-13 …