单选题 The traffic police stopped three trucks heavily loading with merchandise that looked as grain bags.

【正确答案】 B
【答案解析】[解析] load with在此作宾语补足语,因表被动,应用过去分词;“看上去像”应用look like而不是look as;因为like在此是介词,而as作介词时没有此含义;因此答案为B。