--Can a plane fly ________ the Atlantic Ocean?
--Yes, but it needs to go________ the clouds for hours.
| A．through; across | B．across; through |
| C．across; across | D．through; through |
.Every man, woman and child ______ some history, enough at least, to survive in the world.
| A．knows | B．know | C．is known | D．are known |
.None of them ______ my friends.
| A．is | B．are | C．was | D．has been |
.Not only the whole nation, but the whole Europe , indeed the whole human society ______ to alter its attitude to racial problems.
| A．need | B．needs | C．has a need | D．have a need |
.Getting to other planets or to the moon _____ many problems.
| A．involve | B．involves | C．involving | D．to involve |
.In that country, the rich ______ richer, the poor, poorer.
| A．become | B． has become | C．becomes | D．is becoming |