眼睛中的“黑眼球”和“白眼球”分别是指( )
A:脉络膜和晶状体
B:睫状体和虹膜
C:瞳孔和巩膜
D:虹膜和巩膜
(____)1. Let me clean the window.
(____)2. Look! The bird is on the light.
(____)3. There isa picture on the wall.
(____)4. The book is near the computer.
(____)5. The bag is on the chair.
A. B. C.
D. E.
关于光的反射,下列说法错误的是( )
右图介绍信内容所反映的实质是