【题目】Pollution has reached high level in some urban areas, which is quite worrying.
A. disturbingly B. slightly
C. exactly D. flexibly
在线课程【答案】A
【解析】考查副词。句意：在一些城市污染已经到了令人不安的程度，这是相当令人担忧的。根据后边which is quite worrying这是相当令人担忧的，可知前边污染已经达到了令人不安的程度。A令人不安地；B轻微地；C恰好地；D灵活地。故选A。