我国领土大部分位于[ ]
A、高纬度,北温带
B、中纬度,北温带
C、低纬度,亚热带
D、中纬度,热带
答案:B
— Can you speak English?
— Sorry , I _____. [ ]
A. can
B. don't
C. am not
D. can't
广泛前壁心肌梗死心电图表现在()
A.V1-3
B.I、aVL、V6
C.Ⅱ、Ⅲ、aVF
D.V3-5
E.V1-6 、I、aVL