当别人问你长颈鹿有什么特征时,你应该怎样说?
A:It has a long neck.
B:It's very short.
C:It's very small.
已知圆C1:(x+3)2+(y+4)2=4
(1)求与圆C1关于原点对称的圆C2的方程;
(2)求圆C1与圆C2的外公切线的方程.
—Many people eat _______ meat and _______ vegetables than they did before.
—Yes, that's why they're getting fatter and fatter.
如图,在△ABC中∠A=60°,BM⊥AC于点M,CN⊥AB于点N,P为BC边的中点,连接PM,PN,则下列结论:①PM=PN;②AMAB=ANAC;③△PMN为等边三角形; ④当∠ABC=45°时,BN=2PC.其中正确的是____ .