关于生物进化与生物多样性的形成,错误的说法是( )
A:生物多样性的形成经历了漫长的进化历程
B:消费者的出现不影响生产者的进化
C:生物多样性的形成是共同进化的结果
D:生物的进化与无机环境的变化是相互影响的
Hello! I'm Sally. I'm an English girl. Now I'm in Beijing with1parents. Today is Sunday. I2to Yangguang Clothes Store. Wow! I see lots of3clothes in it. They have sweaters at a good4. They have some bags5sports. They have hats in red, black6yellow. The white7are on sale. They8only 15 dollars. I think they are cheap(便宜的), so I9a small one for myself and a large one for my10.
下列节日,属于蒙古族的是( )
如图,在每格为1个单位的正方形网格中建立直角坐标系,反比例函数y=kx的图象经过格点A.
(1)请写出点A的坐标、反比例函数y=kx的解析式;
(2)若点B(m,y1)、C(n,y2)(2<m<n)都在函数y=kx的图象上,试比较y1与y2的大小.