A. a41 a32 a23 a14 a55; B. a34 a25 a43 a12; C. a12 a23 a34 a14; D. a12 a23… a(n-1,n) a(n1)
A. 30 days rule B. pay yourself 10% of your income C. write a shopping list and stick to it D. cut off your TV
A. 对 B. 错