题目

I didn't hear you because I ________ the news on the radio.        A.listen to       B.am listening to          C.listened to    D.was listening to 答案:D10.计算:(1)34×36=310(2)x•x7=x8(3)a2•a4+(a3)2=2a6(4)(-2ab3c2)4=16a4b12c8(5)(-3xy3)3=-27x3y9(6)(-0.125)2015×82016=-8.
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