由曲线y=x和y=x2(上标)围成的平面图形的面积S=______
参考答案:[*]
解析:[提示] 画出平面图形如图3-2阴影部分所示,则 [*] [*]
Mistakes don't just happen; they occur for a reason. Find out the reason, and then making the mistake
becomes ______. [ ]
A. favorable
B. precious
C. essential
D. worthwhile
什么是工作访问?