狭义的外汇特指国际结算的支付手段。
参考答案：对
I enjoy _____ on the grassland, let's stop _____ a rest. [ ]
A. lying, to have
B. lieing, having
C. lying, having
D. lie, to have
气井的作用是将天然气从气层输送到（）的人工通道。
A.井筒
B.地面
C.净化厂
D.用户
