题目

对下表中所列待测物质的检测，所选用的试剂及预期结果都正确的是待测物质检测试剂预期显色结果 ①DNA甲基绿红色 ②脂肪苏丹Ⅲ橘黄色 ③淀粉斐林试剂蓝色 ④蛋白质双缩脲试剂紫色 A． ①③      B． ②③     C． ①④     D． ②④ 答案：DSo quickly ____________ that what is a possibility today may be a reality tomorrow.A．is science advancingB．science is advancingC．will science advanceD．science will advance