单项选择题


A．hard
B．easy
C．enough
D．rough
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单项选择题
According to the passage, people expect that______.
A．helicopters could eventually replace the airliners of today
B．their imaginations fired by the Russian engineer's invention would be realized in the future
C．their fantastic expectations about helicopters could be fulfilled by airliners of today
D．helicopters would someday be able to carry millions of people from place to place as airliners are now doing
单项选择题
A．imaginativeB．imaginedC．imaginaryD．imaginable
A．imaginative
B．imagined
C．imaginary
D．imaginable
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