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

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

How is a radio-quipped buoy operated?
A.by operators inside the vehicle in the part underwater
B.by operators outside the vehicle on ship
C.by operators outside the vehicle on a diving platform
D.by operators outside the vehicle in a laboratory on shore

The word "information" is closest in meaning to __________.
A.data
B.articles
C.photographs
D.samples

I was not surprised to hear that Harry had failed his driving test.
A.It came as no surprise to me that Harry had failed his driving test.
B.Harry's having failed his driving test is not my surprise.
C.If Harry had not failed his driving test, 1 would have been surprised.
D.By having failed his driving test, Harry made no surprise.

She never lets her daughter participate in an activity unless it is under the supervision of an adult.
A.The only activities in which she allows her daughter to take part in are those watched over by a grown-up.
B.As long as she herself is present at the activity, she permits her daughter to join in.
C.If an older person is in attendance, she usually agrees to her daughter's participation in activities.
D.She always takes her daughter to activities which are supervised by grownups.

We couldn't have managed our business successfully without my father's money.
A.If we could manage our business successfully, my father would give us his money.
B.Hadn't it been for my father's money, we couldn't have managed our business successfully.
C.We could have managed our business successfully with my father's money,
D.If we couldn't have managed our business successfully, we would have had my father's money.

No sooner had he been appointed to the post than the new director fell ill.
A.Immediately after his appointment to the post, the new director fell ill.
B.After the new director fell ill, he had been appointed to the new post.
C.Because he had been appointed to the post, the new director fell ill.
D.The new director had no sooner been appointed to the post when he fell ill.

_______(73)
A.upon
B.in
C.at
D.for

_____(75)
A.use
B.make
C.lose
D.spend