等腰三角形一边长为3，另一边长为6，则其周长为________.

根据近20年来的详细调查，海洋里的动物大约有18万种，植物约2万种。这些丰富的海洋生物可为人类社会提供食物、药物和工业原料。其中已被人类开发利用的经济价值较大的鱼类400多种，贝类和甲壳类近百种，藻类70多种，仅占海洋生物种属的一小部分。目前，这些野生海产品的年捕捞量可达2亿吨以上，大约可生产2000多万吨蛋白质食品，对缓解人类食品短缺和补充人体营养起着举足轻重的作用。近几年来，在南北极的科学考察发现，极区海域的渔业资源极为丰富，特别是南极海域的磷虾资源，如加以合理开发，每年可捕捞近亿吨。更令人惊喜的是，近年来的深海考察发现，一直被认为是生命极限区(水深600米以下)的深海底也有生物存在，海洋里的生物资源目前难以估量，其开发前景十分广阔。
随着海洋科学技术的不断发展，80年代兴起的“海上牧场”，已经给人类的食物源带来了生机。据统计，1995年全世界共放牧了100亿尾海洋经济鱼，回捕量已达到1000多万吨。而目前放养的经济贝类，回捕量更是高得惊人，浅海网箱养殖业也正在蓬勃发展，并获得了好收成。海上人工养殖逐步走上了正轨，人类已从海上“猎人”转业为海上“牧民”，耕海牧鱼是21世纪的一大产业。

野生海产品对缓解人类食品短缺和补充人体营养：

A．作用不大
B．有点作用
C．没有作用
D．举足轻重

2012年建材工业增加值同比增长11.5%，增速回落8个百分点，占全国工业增加值的6.6%。全年水泥产量21.8亿吨、同比增长7.4%，陶瓷砖92亿平方米、同比增长9.4%，天然花岗岩石材4.1亿平方米、同比增长27.2%。平板玻璃7.1亿重量箱、同比下降3.2%，卫生陶瓷产量1.6亿件、同比下降13.1%。 

2012年底规模以上企业3.4万家，全年完成主营业务收入5.3万亿元，同比增长13.4%。尽管水泥、平板玻璃等行业利润总额同比分别下降32.8%、66.6%，但由于水泥制品、轻质建筑材料、建筑陶瓷、耐火材料制品、金属门窗和玻纤增强塑料材料等行业利润总额同比分别增长22.5%、21.8%、33.8%、10.5%、26.9%和30.6%，全行业利润总额仍创3750亿元新高，同比增长3.5%。 

大宗产品产销率呈下降态势，水泥产销率97.3%、同比下降0.6个百分点，平板玻璃产销率95.6%、同比下降0.1个百分点。截至12月，水泥制造业存货790亿元，同比增加1.8%；砖瓦、石材等建筑材料制造业存货590亿元，同比增加15.7%；玻璃制品制造业存货319亿元，同比增加15.8%。 

2012年行业出口交货值约2250亿元，同比增长7.9%，出口商品离岸价格上涨9.3%。其中，建筑卫生陶瓷、建筑和技术玻璃、玻璃纤维及制品出口额同比分别增长31.5%、10%、5.7%。

与2010年相比，2012年建材工业增加值约增长了

A.3.5% 

B.19.5% 

C.31.5% 

D.33.2%

行政区划体制

The most thoroughly studied intellectuals in the history of the New World are the ministers and political leaders of seventeenth-century New England. According to the standard history of American philosophy, nowhere else in colonial America was “so much importance attached to intellectual pursuits.” According to many books and articles, New England’s leaders established the basic themes and preoccupations of an unfolding, dominant Puritan tradition in American intellectual life.

To take this approach to the New Englanders normally means to start with the Puritans’ theological innovations and their distinctive ideas about the church—important subjects that we may not neglect. But in keeping with our examination of southern intellectual life, we may consider the original Puritans as carriers of European culture, adjusting to New World circumstances. The New England colonies were the scenes of important episodes in the pursuit of widely understood ideals of civility and virtuosity.

The early settlers of Massachusetts Bay included men of impressive education and influence in England. Besides the ninety or so learned ministers who came to Massachusetts churches in the decade after 1629, there were political leaders like John Winthrop, an educated gentleman, lawyer, and official of the Crown before he journeyed to Boston. These men wrote and published extensively, reaching both New World and Old World audiences, and giving New England an atmosphere of intellectual earnestness.

We should not forget, however, that most New Englanders were less well educated. While few crafts men or farmers, let alone dependents and servants, left literary compositions to be analyzed, it is obvious that their views were less fully intellectualized. Their thinking often had a traditional superstitious quality. A tailor named John Dane, who emigrated in the late 1630s, left an account of his reasons for leaving England that is filled with signs. Sexual confusion, economic frustrations, and religious hope—all came together in a decisive moment when he opened the Bible, told bas father that the first line he saw would settle his fate, and read the magical words: "Come out from among them, touch no unclean thing, and I will be your God and you shall be my people." One wonders what Dane thought of the careful sermons explaining the Bible that he heard in Puritan churches.

Meanwhile, many settlers had slighter religious commitments than Dane’s, as one clergyman learned in confronting folk along the coast who mocked that they had not come to the New World fur religion. "Our main end was to catch fish.

The text suggests that early settlers in New England （）

A. were mostly engaged in political activities

B. were motivated by an illusory prospect

C. came from different intellectual backgrounds

D. left few formal records for later reference

目前，我国国土资源部门、建设部门、农业部门、林业部门分别依据不同的法律对土地、房屋等登记发证工作，下列不属于其法律依据的是（）。

A.《土地登记规则》

B.《土地管理法》

C.《城市房地产管理法》

D.《草原法》