纵贯南北美洲西部海岸的高大山系是[ ]
A．喜马拉雅山系
B．阿尔卑斯山系
C．阿特拉山系
D．科迪勒拉山系
答案：D
Can you tell me ______? [ ]
A. how much does it cost
B. how much it is
C. how much it costs
D. Both B and C
声光报警器是（）报警的装臵。
