①资产阶级改良道路在中国行不通
②中国近代化的道路是漫长而坎坷的
③封建顽固势力比较强大
④资产阶级维新力量弱小
A:①②③
B:②③④
C:①②④
D:①②③④
It was not until dark ___ he was aware of ___ he thought was the correct way to solve the problem.
下面是某同学的部分观察结论,与事实相符的是