题目
化简或求值(本小题5题, 4+4+5+5+5=23 ) (1) (2) ( 3 ) 若A= , B= , 求:当x= -1时,3A-2B的值. ( 4 ) 根据右边的数值转换器,当输入的满足时,请列式求出输出的结果.(5)如果代数式(2x2+ax-y+6)-(2bx2-3x+5y-1)的值与字母x所取的值无关,试求代数式的值 答案:1、2、3、3A-2B=3()-2()当x= -1时,原式=4、数值转换器的表达式为;∵满足∴,即:故,上式=5、∵代数式(2x2+ax-y+6)-(2bx2-3x+5y-1)的值与字母x所取的值无关∴即:故
-How was the televised debate last night?
-Super!Rarely ________ so much media attention.
[ ]
A.a debate attracted
B.did a debate attract
C.a debate did attract
D.attracted a debate