国民生产总值(GDP)是指一个国家以当年价格(或以不变价格)计算的一年内国内生产的全部最终产品和劳务的市场价值总和。( )
参考答案：对
The teacher asked Lucy__________.
A．where did she come from
B．what did she like best
C．when was she born
D．when she got up
二环路上最为复杂而又设计巧妙、气势恢宏的大型立交桥是( )。
A．复兴门桥 B．西直门桥 C．菜户营桥 D．广渠门桥
