在如图所示的的电路中,闭合开关S后,要使滑动变阻器的滑片P向右移动时,电流表示数减小,则M、N应与滑动变阻器上的哪两个接线柱相连………………………( )A.M接C,N接D B.M接A,N接B C.M接C,N接BD.M接A,N接D 答案:D解析:p;【解析】略 The first decade in the 21st century is the one ______ many significant advances are made in China. A. that B. in which C. which D. where