We won’t see any flowers until May.

A．We will see flowers only in May.

B．We won’t see flowers after May.

C．We will see flowers before May.

D．We will see flowers when May comes.

口腔扁平苔藓的基本病损是

A．斑
B．丘疹
C．丘斑
D．糜烂
E．溃疡