In 1991，while t11e economies of industrialized countries met an economic_____，the economies of developing countries were growing very fast ．
C
暂无解析
All her hard work __________in the end ，and she finally passed the exam ．
Allherhardwork__________intheend，andshefinallypassedtheexam．
The opportunity to explore and play and the encouragement to do so Can ________the performance of many children ．
设圆 C 与圆 (x-5) 2+y2=2 ，关于 y=2x 时称，则圆 C 方程为 ( )
It is estimated that ，currently, about 50，000 species become _____every year ．