分析结果准确度可以用（）来论证。
A.对照实验或回收实验
B.检出限
C.重现性
D.标准偏差或相对标准偏差
参考答案：A
牙槽骨的吸收程度为Ⅱ度，表示（）
A.牙槽骨吸收在牙根的颈1／3以内
B.牙槽骨吸收在牙根的颈1／2以内
C.牙槽骨吸收占根长2／3以上
D.牙槽骨吸收达根长的1／2
E.牙槽骨吸收达根长的1／3
---Didn’t you enjoy yourself at the party?
---________, there was _____ at the party.
A．Yes, interesting nothing
B．Yes, nothing interesting
C．No, interesting nothing
D．No, nothing interesting
