【正确答案】 B

【答案解析】If we don"t want to do a lot of calculations, we"re going to have to manipulate the exponents. The first step is to put the 64 and the 4 in the same terms, so let"s make the 64=4 ³ instead. Now the question is looking for the smallest integer k for which 4 ^3k ＞4 ¹⁴ , which is the same as finding the smallest integer k for which 3k＞14. The best answer is 5, or B.