Since mid July, many areas in Shaanxi continuous heavy rain, leading to frequent natural disasters.
A. saw
B. had seen
C. has seen
D. have seen
网友回答
A. saw
B. had seen
C. has seen
(答案→)D. have seen
解析：考查时态。Since+时间点，for+时间段都与现在完成时连用。根据Since mid July可知，应该用现在完成时，排除A、B；主语是many areas，故谓语用复数。故选D。