--Steven has got the first prize in the math contest.

--____ he looks so happy today.

A．There’s no doubt that

B．It’s no wonder that

C．Thisis no doubt whether

D．That is no wonder whether

恶性高血压的基本病变是（）

A.增生性小动脉硬化和坏死性细动脉炎

B.视网膜出血

C.视神经盘水肿

D.肾小叶间动脉内膜增厚

E.肾小球毛细血管内血栓形成