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- 1写出同义句:1.To eat a balanced diet is important __________ _________ to eat a balanced diet
- 2–Why didn’t you _____ the guests some tea at first?-- But they said they didn’t like it.
- 3They need some juice for the party.改成否定句怎么改
- 4已知函数f(x)=-x²+2ax+1-a,若函数f(x)在区间[0,1]上有最小值2,求a的值
- 5有一盒糖,7粒一数还余4个,5粒一数又少3个,3粒一数正好没有剩余,这盒糖至少有_粒.
- 6COSA+COS2A+COS3A+cos4A+cos5A+……+cosnA
- 7字母“i”的读音
- 8菱形的两条对角线分别长为16cm,和12cm,则菱形的周长为_?面积为_?
- 9解下列方程.1.2(x+3)²=x(x+3) 2.x²2根号5x+2=0
- 10小明看一本故事书,第一天看了全书的1/9,第二天看了24页,两天看了的页数与剩下页数的比是1:4,还剩多少页没有看?