听力题 The space shuttle Discovery made a rare night landing at the Kennedy Space Center early on Thursday. The night landing, the eleventh in the center''s ninety-four shuttle missions, ended a ten-day mission to outfit the orbiting international space station. Although the spacecraft created a sonic boom that could be heard along much of Florida''s eastern seaboard, witnesses on the ground could not see the orbiter until it was directly over the runway lights. Scattered showers off the Florida coast had threatened to postpone the shuttle''s return, but forecasters gave the green light when they decided no rain would fall within forty-eight kilometers of the space center.

单选题 The space shuttle Discovery completed a_______mission upon its return to the Kennedy Space Centre.

单选题 When the spacecraft was going to land,_______.