单选题 Modem man is careless when disposing ______ his garbage.
A. of B. to C. at D. about

【正确答案】 A
【答案解析】[解析] dispose of是固定词组，意思为“处理掉，打发掉”。如：He had disposed of all his books when he left school.(他离校前处理掉了所有的书。)其他三个介词都不能与dispose形成习惯搭配。