假设2009年某国一单位M商品,其价值用该国货币表示为30元。如果2010年生产M商品的社会劳动生产率提高50%,且该国的货币价值下降(贬值)20%,在其他条件不变的情况下,2010年一单位M商品的价值用货币表示为( )
Remember when you learned to water ski, David? _________ you skied more, you got better and better. It’s the same with language study.
________ over everything whenever we want to make a decision, many people believe, and we will have less chance of making mistakes.
Of the equipment we have produced, this sells best, for it has the advantage over ________ of working efficiently.
---I think Maths is playing a more important part in the new test system. What about you? --- ______. We should be more devoted to it.
_______ , and he felt hopeless.