—What's your favourite ?
—I like swimming.[ ]
A. food
B. colour
C. sport
答案：C
Usually there might be a lot of accidents in the heavy fog. I happened to witness ______ this morning. [ ]
A. it
B. those
C. one
D. that
肺痈忌用的药物是（）
A.发汗药
B.泻下药
C.排脓之品
D.清热养阴药
E.益气补肺药
