II. 請依題目要求判斷，選出一個正確句子(10%) 38. 請依分詞構句(V-ing或 V-en/P.P.)部分判斷，選出一個正確句子
(A) When surfing the Internet, you should keep all your numbers and passwords a secret.
(B) Chaining to a fire hydrant and treated cruelly, this dog howled miserably in pain while the man laughed loudly.
(C) As the planet warms up, tons of ice surrounded the North Pole and the South Pole has begun to melt.
(D) This short film features the very last polar bear on Earth said farewell on a melting iceberg before it drowns.