澳大利亚首都堪培拉的居民房屋大门最好的朝阳方向是[ ] A．东面 B．西面 C．

中国－东盟自由贸易区的逐步形成，向全世界展示了一个拥有近20亿人口的世界大市场。加强中国与东盟的经济合作

①有利于扩大我国的海外市场，提高我国的对外开放水平

②有利于经济优势的互补，提高资源的利用效率

③有利于改善我国产品结构，增强中国产品的国际影响力

④有利于消除地区贸易摩擦，推动区域经济发展

A．①③④

B．①②④

C．②③④

D．①②③

不宜做眼及眶部CT扫描的是（）。

A.眼部外伤

B.眼眶内异物

C.眼的先天性疾病

D.近视眼

E.眼球及眶内肿物

为保证房地产价格指数的科学性和可靠性，下列说中正确的是（）。

A.选择大的房地产经营服务项目有较强的代表性

B.不能选择合资企业

C.多选地段价格比较高的房地产项目

D.适当选择商业营业用房

E.不能选择办公楼

For more than two centuries, American’s colleges and universities have been the backbone of the country’s progress. They have educated the technical, managerial, (1) and provided generation after generation of national leaders. Today educators from around the globe are turning to U. S. institutions of higher learning (2) . They are apt to find many reasons for the excellence of American universities, but (3) stand out as watersheds:
Education (4) : In 1862 Congress enacted the Land-Grant College Act, which essentially extended the opportunity of higher education (5) , including such disenfranchised groups as women and minorities. Each state was permitted to sell large tracts of (6) and use the proceeds to endow at least one public college.
(7) : Over the years, the decentralization and diversity of the America’s colleges and universities have promoted competition for students and resources. Competitive pressure first arose (8) . The academy’s impact really grew after World War II, when (9) commissioned by President Roosevelt argued that it was the federal government’s responsibility to (10) for basic research. Instead of being centralized in government laboratories, scientific research (11) in American universities and generated increasing investment. It also gave graduate students research opportunities and helped (12) far and wide, to the benefit of industry, medicine and society as a whole.
(13) : The end of the World War II saw passage of the Servicemen’s Readjustment Act of 1944. The law, which provided for (14) for returning veterans, made an already democratic higher-education system accessible in ways that were (15) in Europe, opening the doors of the best universities to men and women who had (16) of going to college.
(17) : The creation of federal loan guarantees and subsidy programs, as well as outright grants for college students brought (18) to higher education and further helped to democratize access. Since its founding (19) , the Federal Family Education Loan Program has funded more than 74 million student loans worth more than (20) .

如图为人体部分特异性免疫过程示意图，请据图回答问题（a、b、c表示细胞，①②③④⑤⑥表示过程）。

浆细胞合成并分泌抗体所涉及到的细胞器有（）