Questions 47-49 refer to the following advertisement.
Order online and save time! There is nothing else like the 62nd floor observatory!At 769 feet (about 234 meters) , reached by high speed, automatic elevators, it has both a glass-enclosed area, which is heated in winter and cooled in summer, (47) spacious outdoor strolls on all four sides of theBuilding. High powered binoculars are available on the strolls for the convenience of visitors (48) a minimal cost. Souvenir counters are also located in the 62nd floor observatory. The 62nd floor observatory is also available for the handicappeD、 Visitors with tickets purchased online will go directly to the elevator waiting area, (49) the ticket line after passing through the security check. A．holding B．reducing C．bypassing D．detouring
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