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56、根据材料，回56-75答题。
Directions: There are 20 blanks in the following passage, and for each blank there are 4 choices marked A, B, C and D at the end of the passage. You should choose ONE answer that best fits into the passage. Then blacken the corresponding letter on the Answer Sheet.
Thirty years ago, most teenagers had bicycles, but now they are comparatively rare. ____56______ ,motor scooters (小型摩托车）are much more common.___57_______ , this may seem to be a sign of progress but ____58______ the change is not necessarily for the better.
It is easy to see why young people prefer scooters. ____59______ , they are much faster and do
not require much physical effort; _____60_____ , you can take a passenger with you on the pillion (后座) seat behind; ______61____ , they give young people a feeling of independence, because they can travel further and impress their friends.____62______ ., the disadvantages are equally obvious.____63______first sight, scooters are more expensive to buy and to maintain, and ____64______ those under 16 are not allowed to have them. _____65_____ ., greater freedom brings danger because speed encourages
young people to take risks and as a result scooters are involved ____66______more accidents, and the accidents are ____67______ more serious.
Bicycles are safer and easier to control. Years ago, teenagers had more experience with them because they _____68_____ to ride as young children, and consequently knew what they were capable of. ____69______ , many young people overestimate what a scooter can do and pretend it has the power of a motorcycle. ___70_______ ., the fact is that bicycles are not very safe_____71_____ in cities these days because there are more cars and drivers are not used to them and do not make allowances for them. _____72_____., those who are old enough to ride scooters naturally prefer them. Those who are too young or cannot afford to buy a scooter probably find bicycles slow and uncomfortable ___73_______., and riding bicycles requires_____74_____ experience of traffic than before. On balance, the change has been for the worse, _____75_____ for the 13-and 14-year-olds, but the only safe solution would be to have special lanes (车道) for cyclists.
第56题答案为
A．At the other end
B．On the contrary
C．On the other hand
D．In addition


57、 第57题答案为
A．At first sight
B．At the beginning
C．In the first view
D．From the first


58、 第58题答案为
A．absolutely
B．actually
C．surely
D．definitely


59、 第59题答案为
A．At first
B．In the beginning
C．At first hand
D．In the first place


60、 第60题答案为
A．also
B．secondly
C．as well
D．at second


61、 第61题答案为
A．above all
B．at most
C．over all
D．after all


62、 第62题答案为
A．Although
B．However
C．Anyhow
D．Instead


63、 第63题答案为
A．In
B．For
C．From
D．At


64、 第64题答案为
A．in this case
B．in any case
C．in no case
D．in some cases


65、 第65题答案为
A．Apart from that
B．As a result
C．Except that
D．On the other hand