A．By filtering sea water.B．By treating sea water with chemicals.C．By taking salt out o

A．By recycling all the water.B．By using very little.C．By transporting plenty from Eart

The train（)just three weeks（) complete a journey that（)six weeks by sea.A. spent…on;

A．That the British would attack by sea.B．That the British were retreating.C．That the B

The products will （) from Shanghai to Singapore by sea.A．SendB．sentC．Be sendD．Be sent

The weight of the liquid displaced by a vessel floating in sea water is equal to the （).A.

Minimal pairs can be exemplified by ____________.A、moon／noonB、foot／foodC、she／sheetD、sea／