B．y saying "the world has been spared a t.rue water war" (Line 1, Para.4), the author means（ ）

[A] the water supply in the world is more than needed

[B] the world has saved enough water to avoid the war

[C] the world has never suffered a war triggered by water

[D] the world spares no effort to avoid a war caused by water

[试题]It has been documented that during World War Ⅱ, America's armed forces once tried formation flight to save fuel.

This place has been ____ after the Second World War.A.refilledB.rearrangedC.reun

As has been pointed out by anthropologists, the tools we use to shape the world

14.He has never been in doubt about his _ that he will travel the whole world.A.

[主观题]Wood has been used to make paper since the 19th __________(世纪).

Indeed it has been pointed out that without depression we would_much of the worl

He has _______ been to Shanghai，has he？（ ）A. alreadyB. neverC. everD. still

Oceanography has been defined as "The application of all sciences to the study o

According to various research studies in the field of online social networks, it

[单选题]The project budget has been finalized.Additional work has been discovered t