单项选择题

A．It enhances one"s memory.
B．It lowers one"s speed of learning.
C．It deepens the difficulty of learning.
D．It makes reading more easily.
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单项选择题
A．It has open doors at the back.B．It can avoid the traffic jam above the ground.C．It is red with double-deckers.D．It requires a travel card.
A．It has open doors at the back.
B．It can avoid the traffic jam above the ground.
C．It is red with double-deckers.
D．It requires a travel card.
单项选择题
A．The development of online videos.B．The limitation of new laws.C．The lower qualities of DVD itself.D．The use of handheld video cameras.
A．The development of online videos.
B．The limitation of new laws.
C．The lower qualities of DVD itself.
D．The use of handheld video cameras.
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