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