单项选择题
A．because they took place at night B．as a signal for the crowd together C．to limit the time when offers could be made D．to keep the auctioneer warm
A．so much more real than B．so much realer than C．so much more actual than D．so far more in fact than
A．the Apollo mission was very successful B．protection from space radiation is no easy job C．astronauts will have deformed children of grandchildren D．radiation is not a threat to well protection space explorers