(x>0)交于A、B两点,连接OA、OB,AM⊥y轴于点M,BN⊥x轴于点N,有以下结论:①S△AOM=S△BON;②OA=OB;③五边形MABNO的面积 S 五边形MABNO < b2 2 ;④若∠AOB=45°,则S△AOB=2k,⑤当AB= 2 时,ON-BN=1;其中结论正确的个数有( )
懂英语的来用恰当的人称代词填空1、This is a boy.___is Tony I am ___ Jim2、Linda is my sister.___is ten.I am ___brother.3、HI.My name is Nick,What's___nameHI.___am Kim4、___first name is Jac
On behalf of the local organisers, I am very pleased to invite you to the 19th European Stroke Conference (ESC) that will take place in Barcelona from 25€"28 May 2010. Barcelona is the second largest city of Spain and has a metropolitan area of about 3,000,000 inhabitants. Being the...
(当地 的) family to better understand the local life.It also helps to improve the visitor's language ability," said a teacher during a school meeting last term. "Students who wish to learn more about foreign cultures or to get foreign experience can join this kind ...