病人自觉视物旋转动荡，如在舟车之上，称为（）
A.目眩
B.目昏
C.雀盲
D.目痛
E.目涩
参考答案：A
A necklace is made by stringing N individual beads together in the repeating pattern red bead, green bead, white bead, blue bead, and yellow bead. If the necklace design begins with a red bead and ends with a white bead, then N could equal ？（）
A．16
B．32
C．41
D．54
E．68
将下列透视术语的代表符号填在括号内。
视平线( )。
