CarlSaganbelievesthatVenusmightbecolonizedfromearthbecause__________.
A.it might be possible to change its atmosphere B.its atmosphere is the same as the earth's C.there is a good supply of water on Venus D.the days on Venus are long enough正确答案A
CarlSaganbelievesthatVenusmightbecolonizedfromearthbecause__________.
A.it might be possible to change its atmosphere B.its atmosphere is the same as the earth's C.there is a good supply of water on Venus D.the days on Venus are long enough正确答案A
