问题：
[单选题]根据老师的讲解,下面哪一句译文更为精准?__________ 国民经济翻了两番后, 我们就有了一个新的起点,再用30年到50年的时间,我们将接近经济发达国家水平
AQuadrupling GNP will provide a new starting point form which, in another 30 to 50 years, we will approach the level of the economically developed countries.
BQuadrupling GNP will provide a new starting point form which, in another 30 to 50 years, we will approach the level of the developed countries.
