如图,在△ABC中,点D,E分别在AB,AC上,DE∥BC.若AD=4,DB=2,则的值为___________. 答案:【答案】.【解析】试题:∵DE∥BC,∴△ADE∽△ABC,∴AD :AB =DE :BC ,∵AD=4,DB=2,∴AD :AB =DE :BC =2: 3 .则的值为. – Would you do me the favor to help repair my motorbike? -- ????_________. A. Yes, that’s right B. No trouble C. Never mind D. With pleasure