A:CD垂直平分AB
B:AB垂直平分CD
C:CD平分∠ACB
D:以上结论都不正确
是公民的个人修养,也是社会文明进步的标志。( )
在等差数列{an}中,a1=1,a7=4,数列{bn}是等比数列,且b1=6,b2=a3,则满足bna26<1的最小正整数n为( )
A:Wow! What a great model plane! Is it yours,Jack?
B:Yes,it's mine.
A:____
B:For two days.
B:At Green Store。
B:It's six dollars.
B:I've given it to Peter.
B:Because he likes it a lot.
A.How much is it?
B.Why did you give it to Peter?
C.How long have you had it?
D.Where did you buy it?
E.Why are you selling it?
F.Where's your old model plane?
G.Can I have a look at your old model plane?