What does Frank want to do with Sally?
A:To buy a sweater.
B:To go to the food store.
C:To wash clothes.
①核糖体 ②线粒体 ③内质网 ④高尔基体.
下图为某反应的微观模拟示意图。从图中获得的有关信息不正确的是( )
如图4种不同的生物,有关它们的叙述错误的是( )