《大 * * 》运动是哪国发生的()。
A、英
B、美
C、意大利
D、法
参考答案:A
— Today the forests are getting fewer and fewer,
— We must ____ down too many trees
A.keep people from cutting
B.prevent people from cutting
C.stop people from cutting
D.all the above
若x=﹣1,则2x3﹣(7x2﹣9x)﹣2(x3﹣3x2+4x)=( )。