上颌动脉是哪一动脉的分支() A.颈内动脉 B.椎动脉 C.颈外动脉 D.颈总动脉 发布时间:2019-01-28 11:44 │ 来源:www.tikuol.com 题型:单项选择题 问题: 上颌动脉是哪一动脉的分支()A.颈内动脉B.椎动脉C.颈外动脉D.颈总动脉E.脑膜中动脉
题型:单项选择题 The threats to the health of astronauts in space are very different from ______ on earth. A.onesB.thatC.itD.those 查看答案
题型:单项选择题 Since the road is wet,() last night.A.it must have rainedB.it must rainC.it must be rainingD.it must have been raining 查看答案