A. In the eighteenth century. B. In the early nineteenth century. C. In the late nineteenth century. D. In the early twentieth century. 参考答案:D 答案解析:文章第三段第一句Butler Square,in Minneapolis,exemplifies major changes in its complex of offices, commercia
第35题: [单项选择]正常微循环中经常开放的通路是() A. 直捷通路 B. 迂回通路 C. 营养通路 D. 动-静脉短路 E. 以上都不是 参考答案:A