原子吸收分析属于（）。
A.紫外吸收
B.分子吸收
C.原子吸收
D.红外吸收
参考答案：C
输尿管生理狭窄的个数是（）
A.2个
B.3个
C.4个
D.5个
E.6个
— Shall we take the 10:20 train?
— No. If we took that train, we _____ too late. [ ]
A. arrive
B. would arrive
C. will arrive
D. arrived
