第12题: [单项选择]关于尿中结晶,正确的是()。 A. 尿中出现磺胺结晶提示有肝萎缩、磷中毒或白血病等 B. 亮氨酸和酪氨酸结晶出现于尿中,一般无临床意义 C. 胱氨酸结晶正常尿中少见,大量出现多见于肾或膀胱结石 D. 硫酸钙结晶为无色针状结晶,呈放射状排列,出现于新鲜尿液中有较大临床意义 E. 草酸钙结晶不属于正常的代谢成分 参考答案:C
A. To estimate the extreme weather. B. To develop the satellite technology. C. To improve agricultural output. D. To learn how to change information to maps more efficiently. 参考答案:A 答案解析:[听力原文]14-16 American scientists are developing maps that can identify areas of future floodin