测定样品中糖类时，常用的澄清剂有（）；（），硫酸铜和氢氧化钠。
参考答案：中性醋酸铅，乙酸锌和亚铁氰化钾
Some people like wearing fashionable clothes; _____ some birds like brilliant feathers. [ ]
A. immediately
B. likely
C. completely
D. similarly
试述胆固醇性息肉典型声像图。
