_______(80)
A.faster
B.slower
C.worse
D.better

A.stretch
B.charge
C.achieve
D.chemical

A.style
B.penalty
C.pretty
D.typical

A.reduce
B.aware
C.action
D.enjoy

A.wonderful
B.interest
C.personal
D.decision

The boy was too fat to run far.
A.The boy was very fat and couldn’t run far.
B.The boy’s fatness didn’t stop him running far.
C.The boy had to run a lot because he was fat.
D.The boy became ill because he was fat.

Julia forgot to do her homework.
A.Julia did her homework but she didn’t remember.
B.Julia forgot doing her homework.
C.Julia didn’t do her homework as she didn’t remember.
D.Somebody did her homework for Julia but she forgot it.

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