题型:选择题 Can you tell me ________ the problem of stress?A.what I should deal withB.how I should do withC.what to deal withD.how to deal with 查看答案
题型:计算题 先化简,后求值:(1)(4a+3a2﹣3﹣3a3)﹣(﹣a+4a3),其中a=﹣2;(2)(2x2y﹣2xy2)﹣[(﹣3x2y2+3x2y)+(3x2y2﹣3xy2)],其中x=﹣1,y=2. 查看答案