Tom is an American boy. _____ mother is a doctor. [ ]
A. Her
B. He's
C. His
D. Him
答案:C
“给定资料5”中提到,某网民认为“医患关系紧张完全是因为医生医德败坏。”请你根据给定资料,谈谈对此观点的见解。 [要求] 观点鲜明,阐述具体,逻辑性强,语言顺畅;字数不超过300字。
各晶族各晶系的对称特点是什么?