题目

How hard we have all prayed(祈祷) to grow up quickly, and looked forward to the happy days of being a grown-up and enjoying the many interests that a youth should have. At last, you have grown up. At least you are no longer a child. They call you “young lady”. You then enjoy the pleasure of being a young lady. You are proud of being a grown-up teenager. People welcome you-this young lady-heartily. You are glad that your prayer has been answered. But there is always something that troubles you a lot. You say; “Papa and Mama, give me some money please. My pocket money is all gone“西气东输”是西部大开发的重大工程，“西气”指的是( )A．石油气 B．天然气 C．水煤气 D．煤气