题目

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。In the past， nothing aroused the spirit of America 's emerging economy like the skyscraper. Height【1】be) a fascination since the pyramids. It's closer to the heaven. It scares off your enemies. It makes you faithfully kneel down in awe.But the height of these buildings【2】(create) many new engineering problems. The real challenges are that architects are moving into a different league of engineering, one of【3】is wind loading. Wind loading is a term engineers use【4】(measure) the effect某商场以每件20元的价格购进一种商品，试销中发现，这种商品每天的销售量m（件）与每件的销售价x（元）满足关系：m=140-2x．（1）写出商场卖这种商品每天的销售利润y与每件的销售价x间的函数关系式；（2）如果商场要想每天获得最大的销售利润，每件商品的售价定为多少最合适？最大销售利润为多少？