美国政府对不同GPS用户提供（）定位服务和精密定位服务。
参考答案：标准
日前世界上石油储量最大，生产和输出石油最多地区是
A．东南亚
B．中亚．
C．欧洲西部
D．西亚
The teacher ________ my mobile phone because I used it in class. [ ]
A. took out
B. took away
C. took off
D. took place
