题目

An accident in a bicycle race in the United States eight years ago alerted James Chang to the importance of sports medicine. One of his riding companions (25) ______ (injure) severely in the accident. From then on, Chang, 45, a Chinese-American who was born in Anhui province, began to launch business relating to physical safety and medical assistance, particularly in sport. So (26)______ he took up marathon running two years ago he was shocked to see frequent injuries, many of them avoidable. “I always heard people talking about people in marathons in China dying suddenly,” he sa（2012•衢州）据衢州市2011年国民经济和社会发展统计公报显示，2011年衢州市新开工的住房有商品房、廉租房、经济适用房和公共租赁房四种类型．老王对这四种新开工的住房套数和比例进行了统计，并将统计结果绘制成下面两幅统计图，请你结合图中所给信息解答下列问题：（1）求经济适用房的套数，并补全频数分布直方图；（2）假如申请购买经济适用房的对象中共有950人符合购买条件，老王是其中之一．由于购买人数超过房子套数，购买者必须通过电脑摇号产生．如果对2011年新开工的经济适用房进行电脑摇号，那么老王被摇中的概率是多少？（3）如果2012年新开工廉租房建设的套数比2011年增长10%，那么2012年新开工廉租房有多少套？