计量分离器冲砂时应选择1口（）。
A、含水较高的井
B、含水较低的井
C、回压较高的井
D、回压较低的井
参考答案：A
--- Did you have anyone _________ the watch?
--- Yes. I had the watch ________ yesterday.
A．to repair; repair
B．repaired; repaired
C．repair; to be repaired
D．repair; repaired
卢梭认为，2-12岁的儿童教育应该以体育锻炼和（）为主.
