下列哪些宝石的晶体的晶面具纵纹（）
A、电气石
B、水晶
C、黄玉
D、绿柱石
参考答案：A, C, D
The explanation given by the manager yesterday was not at all ________ to us.
A．satisfy
B．satisfied
C．satisfactory
D．satisfying
病毒性肝炎的传播途径是什么？
