[单项选择]The situation today is obviously quite different from ______ it was only 50 years ago.
A. which
B. what
C. when
D. such

The first hotels were very different from today’s hotels. They were small inns built along the road. Later, as people began to travel by train, hotels were built in the centers of large cities. Usually located near railroad stations, these hotels were many stories tall and had hundreds of rooms.
Although trains were a popular means of travel for some time, automobiles slowly began to take their place. Automobile travel caused problems for city hotels, which did not have parking space for so many cars.
People who traveled by automobile needed a different kind of hotel. They needed places to stay that were near highways and had room to park. Motorists did not like to drive in heavy city traffic to reach a hotel. The answer to the motorists’ problems came when a new kind of hotel was built. These new buildings were called motels, a word made from the first part of MOTORIST and the last part of HOTELS.
Motels were much smaller than hotels.
A. large enough rooms for big families
B. place for cars to park in
C. sufficient ground rooms
D. quiet and convenient units