血清中溶菌酶主要来自()
A．淋巴细胞
B．嗜酸性粒细胞
C．嗜碱性粒细胞
D．红细胞
E．单核细胞
参考答案：E
提示右心室肥大的体征（）。
A.剑突下示心脏抬举样搏动
B.肺动脉瓣区第二心音（P2）亢进
C.颈静脉怒张
D.双下肺湿性啰音
E.心浊音界缩小或叩不出
根据汉语提示完成句子。
1. In the United States and Mexico, people are supposed _________ (握手) when they meet for
the first time．
2. In Japan and Korea, you' re supposed to (鞠躬) when you meet someone.
3. People in Brazil often (吻) when meet.
