There _____ some water in the glass. [ ]
A. are
B. is
C. am
答案：B
阴寒凝滞型心痛的症状特点是
A．胸部刺痛，固定不移B．胸痛彻背，感寒痛甚C．心痛彻背，背痛彻心，痛剧而无休D．胸闷如窒而痛，肢体沉重E．胸闷隐痛、时作时止
微生物的寄生培养
