-Is there any possibility_________ you could pick me up at the airport?    

-No problem.                                                        [ ]

A. when    

B.that    

C.whether    

D.what

皮疹与出血点的鉴别要点是（）

A.颜色不同

B.大小不等

C.压之退色

D.有无疼痛

E.持续时间长短