心脏传导系统分支位于心脏的:()。
A.心内膜
B.心内膜下层
C.心外膜
D.内皮下层
E.心肌膜
参考答案:B
_____ more effectively with others, more and more people equip themselves with a higher education.
A.Compete
B.Being competed
C.To compete
D.Competing
下列词语中没有错别字的一项是
A.给力拉力赛星罗棋布优柔寡断歌功讼德
B.网页炒冷饭出其不意披沙捡金提心吊胆
C.跑酷碰钉子首屈一指鸦雀无声峰回路转
D.伏罪曝冷门无稽之谈平心而论元气大伤