With what topic is the passage primarily concerned?
A.Communication among drivers
B.Technological advances in oceanography
C.irect observation of the ocean floor
D.Undersea vehicles

Drives have had problems in communicating underwater because ________.
A.the pressure affected their speech organs B. the vehicles they used have not been perfected
B.they did not pronounce clearly
C.they did not pronounce clearly
D.the water destroyed their speech organs

This passage suggests that the successful exploration of the ocean depends upon __________ .
A.the limitations of diving equipment
B.radios that divers use to communicate
C.controlling currents and the weather
D.vehicles as well as divers

The word “cruise“ could best be replaced by ___________ .
A.travel at a constant speed
B.function without problems
C.stay in communication
D.remain still

This factory produced motorbikes in 2008 as in the year 2006.
A.twice as many
B.as twice as many
C.as twice many
D.as many as twice

He runs a business, he proves to have managerial skills.
A.however
B.otherwise
C.and
D.despite

_________(21)
A.delighted
B.cheered
C.appreciated
D.overjoyed

_________(23)
A.use
B.play
C.operation
D.service

In Paris/ Hemingway meet/ many / his old friends / encourage / his writing / career.
A.In Paris, Hemingway encouraged many of his old friends who met him in his writing career.
B.In Paris, Hemingway met many of his old friends, who encouraged him in his writing career
C.In Paris, Hemingway encouraged his writing career which many of his old friends met.
D.In Paris, Hemingway encouraged his writing career to meet many of his old friends.

I / grateful / you / send / latest catalogue / price lists.
A.I am grateful if you send me the latest catalogue of price lists.
B.I would be grateful to you to send me the latest catalogue of price lists.
C.I would be grateful if you could send me the latest catalogue of price lists.
D.I would be grateful if you could send to me the latest catalogue of price lists.