单选题 A little learning is a dangerous thing, for you might as well not know a thing ______ know it only imperfectly.
A. that B. as
C. than D. but

【正确答案】 B
【答案解析】[解析] might as well...as“与其说……倒不如……”。如本句：“对知识一知半解万万要不得，因为与其知之甚微倒不如干脆不知。”