都江堰是由战国时期秦国蜀郡太守 父子所建,它由 、 、等部分组成。
李冰;分水鱼嘴飞沙堰 ;宝瓶口
5x表示5个x相乘.______.(判断对错)
—I have just had my watch repaired.
—How much did they ________ for that?[ ]
A. cost
B. charge
C. spend
D. consider