第一节 单项填空 （共20题，每小题0.5满分10分）
从A.B.C.D.四个选项中，选出可以填入空白处的最佳选项。
13.---- How about ____ Christmas evening party?
---- I should say it was ____ success.
A. a; a B. the; a C. a; / D. the; /
14.____, the disease will produce a powder poison that will kill the patient.
A. If it untreated B. If is untreated C. If being untreated D. If untreated
