题目

Without proper planning, tourism can cause problems. For example, too many tourists can crowd public places that are also enjoyed by the local people of a country. If tourists create too much traffic, the local people become unhappy. They begin to dislike tourists and to treat them impolitely. They forget how much tourism can help the country’s economy(经济). It is important to think about the people of a destination country and how tourism affects them. Tourism should help a country keep the customs and beauty that attract tourists. Tourism should also advance(推进) the well-bei兴发服装店老板用4500元购进一批某款T恤衫，由于深受顾客喜爱，很快售完，老板又用4950元购进第二批该款式T恤衫，所购数量与第一批相同，但每件进价比第一批多了9元． （1）第一批该款式T恤衫每件进价是多少元？ （2）老板以每件120元的价格销售该款式T恤衫，当第二批T恤衫售出时，出现了滞销，于是决定降价促销，若要使第二批的销售利润不低于650元，剩余的T恤衫每件售价至少要多少元？（利润=售价﹣进价）