我国东部人口稠密的自然原因是[ ]
A.地形多种多样
B.气温高,适合人类生存
C.城镇多,交通便利
D.耕地多,气候适宜
答案:D
—What's the matter?
—I my arm. [ ]
A. broke
B. have broken
C. was broken
一患者从2米高处跌下2天,颏部着地,神志清,无头痛,呕吐史,两侧耳前区压痛明显肿胀,开口轻度受限,前牙开,应考虑诊断为()
A.眶骨骨折
B.颧弓骨折
C.双侧下颌骨髁状突部骨折
D.下颌体部骨折
E.下颌骨颏部骨折