主要由柯氏位摄片显示的是哪项()
A.乳突、中耳气房
B.视神经孔、后组筛窦
C.内听道、蝶鞍、枕骨
D.额窦、眼眶周围骨质
E.上颌窦、筛窦、额窦
参考答案:D
—Have you been to Mexico?
—No, I ______ last year, but Dad wouldn’t let me.
A.was to have gone
B.was to go
C.was gone
D.went
与2999相邻的两个数是[ ]
A.3000和3001
B.2998和3000
C.2899和3000