--------- What a fine day! Shall we go picnicking?

------___________. But we need to be home before six o’clock for the football match..    

A．Have a nice time.

B．Pardon me

C．That’s great

D．You are right

男性患者，22岁，晚餐后突然出现上中腹部疼痛并恶心呕吐胃内容物，随后出现发热，腹痛转移至右下腹。查体：体温38℃，心肺无异常。右下腹麦氏点压痛。诊断考虑（）

A.肾结石

B.小肠疾病

C.肠道寄生虫病

D.肠穿孔

E.急性阑尾炎