你能帮帮他们吗
精彩回答
我常常想:世界文明的发展,源远流长,错综万端。它是从古到今,全人类共同缔(dì)造的。
1年前
Have you seen Henry lately? My boss wants to know ______.
1年前
Shopping habits in the United Stateshave changed greatly in the last quarter of the 20th century.
1年前
125×16的简便方法是( )A.125×10+6 B.125×10×6 C.125×8×2
1年前
已知函数f(x)=2x^2/(1-x)^2 (1)求f(x)的单调区间与极值 (2)求曲线y=f(x)的凹凸区间与拐点
1年前