水玻璃作为双氧水稳定剂的主要缺点是（）
A、易结硅垢
B、价格高
C、白度不佳
参考答案：A
根据句意将括号中的字母组成正确的单词并填空。
1. (herew) —__________ is your backpack? —It's on the sofa.
2. (serdres) Look. The __________ is next to the bed.
3. (nowk)—Where are my keys? —Sorry. I don't __________.
4. (wredra) My mother's gold ring is in the __________.
5. (dinbeh) The eraser is __________ the pencil case.
测量病人脉率及脉律，常规触摸（）
A.桡动脉
B.颈动脉
C.股动脉
D.肱动脉
E.足背动脉
