根据绘本How cars have changed! 判断正误，用T/F表示。
1．The police officer ran down the street faster than he could. ( )
2．They must be going three miles an hour. ( )
3．There weren’t many cars on the road in the early 1910s. ( )
4．The cars shown here are from the early 1900s. ( )
5．The only cars were faster than the horse-drawn buggies that most people still used. ( )
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