Passage oneNew York is one of the last large cities to have some of its policemeohorseback. The New York police have 170 horses, which use more tha8,000 horse-shoes a year. Keeping these shoes igood repair is the job of six blacksmiths (铁匠). There are only about 35 blacksmiths ithe whole United States.A blacksmith has to be able to shape a shoe from a plaipiece of metal and thefit it to each horse. A blacksmith must work hard, since he is bent over while fitting the shoe and must old the weight of the horse’s leg at the same time.Every police horse iNew York gets shoes every month. The cost of shoeing a horse is betwee20 dollars and 30 dollars, and it takes a skilled blacksmith two to three hours to do the job.Clearly, A blacksmith must have great strength. But evemore important, he must be able to deal with horses. For before the blacksmith cabegihis work, he has to get the horse to lift its leg.( )1 How many horseshoes does a blacksmith have to make a year
·over 1000
·over 8000
·over 200
·over 400

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