右图所示神经结构,称为·················· ( )
A.神经元
B.神经
C.反射弧
D.神经系统
答案:C
该图是完成反射的结构图,叫做反射弧。
You'd better ____________ football in the street. It's dangerous.[ ]
A. not play
B. not to play
C. playing
D. don't play
______ you are supposed to do ______ you don't like a thing is ______ it. Don't complain.
A.That; what; change
B.When; that; to change
C.What; when; change
D.What; that; changing