A. by subway B. by sled C. by ferry D. by car

【答案】C

【解析】

by subway “乘地铁” by sled“坐雪橇” by ferry “乘轮渡” by car“乘小汽车” Some children in Jiangxi, China, go to school ________. “中国江西的孩子们乘轮渡去上学”所以选择C。