髋的骨性关节炎最常见的表现是（）
A.关节渗液
B.疼痛
C.捻发音
D.关节挛缩
E.无力
参考答案：B
用所给词的正确形式填空。
1. His father worked for twenty hours without_____ (stop).
2. Norman Bethune will _____ (miss) by Chinese people forever.
3. Mother bought enough food_____ (feed) our dog.
4. Einstein's letter asked people_____ (give) up nuclear weapons.
5. Now he is working on _____ (develop) new machine.
在其他组分的存在条件下，分析方法能准确地测定出被测组分的能力
A．耐用性B．检测限C．定量限D．专属性E．精密度
