问题
单项选择题
左心室流入道和流出道的分界线是
A．室上嵴
B．界嵴
C．界沟
D．二尖瓣
E．主动脉瓣
答案
参考答案：D
解析：二尖瓣是左心室流入道和流出道的分界线。
搜题请搜索小程序“爱下问搜题”
左心室流入道和流出道的分界线是
A．室上嵴
B．界嵴
C．界沟
D．二尖瓣
E．主动脉瓣
参考答案：D
解析：二尖瓣是左心室流入道和流出道的分界线。
| 从框中给出的6个词组中选出其中的5个填入下列句子中,使句子的结构和意思完整。 | |
2. , he expressed his wish to come to Paris again. 3.She was __________ by her grandmother before she went to college in New York. 4.Every one of you is required to ____________ to make a contribution to your country. 5._________ the local custom, a man can marry several women and a woman can marry several men. |