成考
会员中心
搜索
题目类型：[单选]
[单选] 正常成人眼看6m以外物体时（ ）
A
折光系统需要调节，使物体在视网膜清晰成像
B
折光系统不需调节，物体即可在视网膜上清晰成像
C
折光系统不需调节时，物体在视网膜前成像
D
折光系统不需调节时，物体在视网膜后成像
E
折光系统最大调节，物体在视网膜上才能形成清晰的图像
查看正确答案
正确答案：
试题难度：
参考解析：
略
相关题目:
[单选] I remember _______ her at the party last week．
[单选] I have four letters to write today and I have finished_________．
[单选] His hands _______ a little as he took up a pen and began to write．
[单选] ________at his model plane over the weekend，he didn’t complete it．
[单选] I looked and looked，and at last I made out two figures moving slowly in the _______.