马克思说:“假如必须等待积累去使单个资本增长到能够修筑铁路的程度,那么恐怕直到今天世界上还没有铁路,但是通过股份公司瞬间就把这件事完成了。”在社会主义条件下,马克思的这段话给我们的启示是( )
There is no doubt that I'm trying to do what is best, but ________ I have got to consider the cost.
If the price of oil remains ________ for the rest of 2013, I will consider buying a new car.
Mike did the homework ________ it took me.
With increasing working pressure, Anthony has ________ time to spend with his friends than before.
Though many extra trains and buses are used to carry passengers, traffic tools are still ________ needed during the Spring Festival.