A:①②③④
B:①②③
C:②③④
D:①③④
A:What's that?
B:It's a parrot.
My grandmother always treats others with _______.
当低倍镜换为高倍镜后( )
某同学利用暑假准备实地考察我国境内已知的最早人类遗址,他应该去( )