猜你喜欢
- 1It is about ten_____(minute)walk from his home to school
- 2He was late again,so his teacher angry with him.(对He was late again提问)
- 3we had great fun（）at the party A.sing and dance B.singing and dancing C.sang and danced D.to sing and dance
- 4英语翻译
- 5if you don't look carefully ,you can't find them
- 6已知O为坐标原点,i,j分别表示与x,y轴方向一致的单位向量,若OA=2(i+j),OB=4i+j,在x轴上有一点P,若AP*BP
- 7对于任意的有理数a、b,定义新运算※:a※b=2ab+1,如(-3)※4=2×(-3)×4+1=-23.试计算
- 8如图,在Rt△ABC中,以直角边AB为直径的圆O交斜边于D,OE平行BC交AC于E.求证：(1)DE是圆O的切线
- 9恭敬地看是什么词语
- 10微观经济学 假定某商品销售的总收益函数为TR=120Q-3Q.求当MR=30时需求的价格弹性.