单项选择题

A．It is available in small airports and can fly further.
B．It can reduce fuel emissions by about 20%.
C．It is equipped with sports and entertainment facilities.
D．It provides more comfortable seats for passengers
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填空题
Compared with the crow, Genus Eumenus seems to display the number sense ______ rather than consciously.
单项选择题
A．She set a new record of flying from Europe to India.B．She proved women could fly as well as men could.C．Her flight was the longest one ever made by human being till then.D．She flied at the highest speed ever known to men till then.
A．She set a new record of flying from Europe to India.
B．She proved women could fly as well as men could.
C．Her flight was the longest one ever made by human being till then.
D．She flied at the highest speed ever known to men till then.
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