镜片价格上升，则眼镜的需求会( )。
A．减少
B．不变
C．可能不变也可能变化
D．增加
参考答案：A
around the Water Cube, we were then taken to see the Bird’s Nest for the 2008 Olympic Games.[ ]
A. Having shown
B. To be shown
C. Having been shown
D. To show
目前，我国政策性银行的金融债券在证券交易所市场发行。（）
