如图所示,物体AB置于薄凸透镜前,则AB的像的位置在
A.E点附近
B.G点附近
C.C点附近
D.D点附近
答案:A
— hall he come today or tomorrow?
— p to him.It makes no ________ to me.[ ]
A. meaning
B. trouble
C. relation
D. difference
用于测量眼球轴长,最准确的是______
A.A型超声扫描 B.B型超声扫描C.超声生物显微镜(UBM) D.彩色多普勒成像(CDI)E.电子计算机体层扫描(CT)