A:GoodmorningLucy.B:GoodmorningZhaoMing.A:1.B:It'saphotoofmyfamily.A:Isthisyourgrandfather?B:Yes.2.A:Isyourgrandmotherontheright?B:Yes.Andsheisateacher.A:3.B:Nothe
A:Good morning Lucy.
B: Good morning Zhao Ming.
A: 1.
B: It's a photo of my family.
A:Is this your grandfather?
B: Yes. 2.
A:Is your grandmother on the right?
B: Yes. And she is a teacher.
A: 3.
B: No they are my uncle and aunt.
A: 4.
B: Yes. And the girl on the left is my cousin.
A: 5.
B: She is twelve years old.
A. Are those your parents?
B. How old is she?
C. What's this?
D. Is that boy you?
E.He is 70 years old.
F.She is in Class 2 Grade 7.
G.She is 68 years old.
1—5 CEADB
若a+b=b+c,则a-b(c为整式)若a=b,则ac=bc(c为整式)若ac=bc,则a=b(c 2020-04-22 …
已知实数a,b满足a+b=8,ab=15,且a>b,试求a-b的值解a+b=8,ab=15(a+b 2020-05-17 …
如图正方形被一条曲线分成A、B两部分,下面()说法正确.A.如果a>b,那么A周长大于B周长B.如 2020-05-17 …
同学们植树,成活了a棵,死了b棵,成活率是()a.a/b*100%b.b/a*100%c.a同学们 2020-06-03 …
对方阵A实行初等变换得距阵B,若|A|不等于0,则A.必有|A|=|B|B.必有|A|不等于|对方 2020-06-18 …
1.已知a+b+c=0,a^2+b^2+c^=1,求:①ab+bc+ac的值②a^4+b^4+c^ 2020-07-09 …
下列关系不成立的是Ab分之-a=--b分之a=-(b分之a)B-(b分之-a)=-a分之-b=b分 2020-07-29 …
2、已知a,b为非零向量,则下列命题中真命题的个数为A若|a|+|b|=|a+b|,则a与b方向相 2020-07-30 …
(a+b+c)^3-(b+c-a)^3-(c+a-b)^3-(a+b-c)^3=[(a+b+c)^ 2020-08-02 …
下面的等量代换怎么做1.A+B=20,B+C=12,C+A=18,ABC各多少2.A+A+A=B+ 2020-08-02 …