—I could have arrived much earlier, but I ____ in the traffic.

—What a pity![ ]

A. would be caught

B. was caught

C. has been caught

D. had been caught

中国夏季南北温差（），冬季南北温差（）；

北方地区春温>秋温，春秋季温度升降（）；

南方地区秋温>春温，春秋季温度升降（）。