问题
单项选择题
生理性第二心音分裂常见于
A．浮肋
B．肋脊角
C．胸骨角
D．腹上角
E．肩胛下区
答案
参考答案：A
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生理性第二心音分裂常见于
A．浮肋
B．肋脊角
C．胸骨角
D．腹上角
E．肩胛下区
参考答案：A
| 完形填空 | ||||
| Shopping habits in the United States have changed greatly in the last quarter of the 20th century.Early in the 1900s most American towns and cities had a Main Street.Main Street was always in the heart of a town.This street was 1 on both sides with many 2 businesses.Here, shoppers walked into stores to look at all sorts of merchandise:clothing, furniture, hardware, groceries. 3 , some shops offered 4 . These shops included drugstores, restaurants, shoerepair stores, and barber or hairdressing shops. 5 in the 1950s, a change began to 6 .Too many automobiles had crowded into Main Street while too few parking places were 7 shoppers.Because the streets were crowded, merchants began to look with interest at the open spaces 8 the city limits. Open space is what their cardriving customers needed. And open space is what they got when the first shopping centre was built.Shopping centres, or rather malls, 9 as a collection of small new stores 10 crowded city centres. 11 by hundreds of free parking space, customers were drawn away from 12 areas to outlying malls.And the growing 13 of shopping centres led 14 to the building of bigger and better stocked stores.By the late 1970s, many shopping malls had almost developed into small cities themselves.In addition to providing the 15 of one stop shopping, malls were transformed into landscaped parks, with benches, fountains, and outdoor entertainment. | ||||
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