确诊宫颈癌的方法是（）
A.宫颈刮片细胞学检查
B. * * 镜检查
C.碘试验
D.宫颈和宫颈管活组织检查
E.接触性出血
参考答案：D
There are so many kinds of Mp3 in the shop. We can't decide . [ ]
A. what to buy
B. to buy what
C. which to buy
D. to buy which
当利用精密雷达实施进近管制时，管制员应当向航空器提供（）。
A.下滑航径的引导
B.应飞航向
C.应飞高度
D.转弯方向
