As Philadelphia grew from a small town into a city in the first half of the eighteenth century, it became an increasingly important marketing center for a vast agricultural hinterland. Market days (1) the crowded city even more crowded, as farmers from within a (2) of 24 or more kilometers brought their sheep, vegetables, cider and other products for direct sale to the (3) . The High Street Market was continuously (4) throughout the period until 1736, (5) it (6) from Front Street to Third. By 1745 New Market was opened on Second Street. The next year the Callow Hill Market began (7) .
Along with market days, the (8) of twice-yearly fairs persisted in Philadelphia (9) after similar trading days had been discontinued in other colonial cities. The (10) provided a means of bringing handmade goods from (11) places to would-be buyers in the city. Linens and stockings from Germantown, (12) , were popular items.
Auctions were another popular (13) of trade. Because of the competition, retail (14) opposed these as well as the fairs. (15) governmental attempts to eradicate fairs and auctions were less than successful, the ordinary (16) of economic development was on the merchants’side, as increasing business specialization became the (17) of the day. Export merchants became differentiated from their importing counterparts, and specialty shops began to appear (18) general stores selling a variety of goods.
One of the reasons Philadelphia’s merchants prospered was because the surrounding area was undergoing tremendous economic and demographic growth. They did their business, (19) , in the capital city of the province, (20) to not only the governor and his circle, but citizens from all over the colony.
16（）
A.course
B.trick
C.velocity
D.hatch
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以下检测幽门螺杆菌的方法中，最简便的方法是（）。
A.细菌培养
B.病理组织学检查
C.血清抗体监测
D.快速尿素酶试验
E.PCR
The Erie Canal was the first important national waterway built in the US. It crossed New York from Buffalo on Lake Erie Troy to Albany on the Hudson River. It joined the Great Lakes with the Atlantic Ocean. The canal served as a route over which industrial goods could flow into the west, and materials could pour into the east. The Erie Canal helped New York develop into the nation’s largest city.
The building of the canal was paid for entirely by the state of New York. It cost $ 7 143 789, but it soon gained its price many times over. Between 1825, when the canal was opened, and 1882, when toll charges were stopped, the state collected $121 461 891.
For a hundred years before the Erie was built, people had been talking about a canal which could join the Great Lakes and the Atlantic Ocean. The man who planned the Erie Canal and carried the plan through was De Witt Clinton. Those who were against the canal laughingly called it "Clinton’s Ditch". Clinton talked and wrote about the canal and drew up plans for it. He and Governor Morris went to Washington in 1812 to ask for help for the canal, but they were unsuccessful.
Clinton became governor of New York in 1817, and shortly afterwards, on July 4, 1817, broke ground for the canal in Rome, N. Y. The first part of the canal was completed in 1820. As the canal grew, towns along its course developed fast. The length of the canal is 363 miles.
We can see that the Erie Canal ().
A. joined the Great Lakes together
B. crossed New York from north to south
C. played an important part in developing New York City
D. was the first waterway built in the US
设用两种仪器测量同一物体的长度分别得到如下结果： X1=5.51±0.05mm X2=5.80±0.02mm 为综合这两种测量结果以便公布统一的结果，拟采用加权平均方法。每个数的权与该数的绝对误差的平方成反比。经计算，公布的测量结果是（）mm。
A．5.76
B．5.74
C．5.57
D．5.55
帕金森病的病理表现为
A．中枢神经系统多发的脱髓鞘斑
B．脑发育不良
C．脑部含色素的多巴胺神经元变性缺失
D．脑部细胞线粒体损伤
E．脊髓前角运动神经元变性坏死
821资金，下列哪些帐表的行项目需要通过帐表定义才可查询输出？（）
A、各银行存款动态余额表
B、客户资金明细表
C、资金状况表
D、单位利息汇总表