太阳能电池的光伏板是由非晶态硅制成的，它能把太阳能直接转化为电能，其主要材料是（

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.

2（）

A.radiation

B.extent

C.radius

D.territory

写出下列数字。

1. 10 ___________  2. 3 ___________    

3. 5 ___________    4. 8 ___________    

5. 9 ___________

与牙槽骨垂直吸收有关的是（）

A.龈袋

B.骨内袋

C.骨上袋

D.龈沟

E.牙周袋

宁夏回族自治区成立以来，自治区党委和政府始终把民族团结视为各族人民的生命线，采取多种形式营造各民族“平等、团结、互助、和谐”的社会氛围，紧紧围绕各民族团结奋斗、共同繁荣这个主题，把中央方针政策和民族地区实际相结合，集中力量办好各族群众共同关心的事情，努力让各族人民共享改革发展的成果，开创了建设和谐宁夏的新局面。

上述材料中包含丰富的《政治生活》道理，请认真思考分析，完成下表。(10分)