瓦斯爆炸的最高浓度是()
A.9.5%
B.16%
参考答案:B
The Nobel Prize for Literature was _______ awarded to a Chinese writer, Mo Yan.
A.the first time
B.for the first time
C.on the first time
D.the only time
经济发展的商品化是货币化的前提与基础,但商品化不一定等于货币化。