题目内容
(请给出正确答案)
[单选题]
() through a telescope (望远镜), the most prominent parts of the Martiansurface are the white polar (极地的) caps.
A.Seeing
B.When seeing
C.Seen
D.Having seen
![](https://lstatic.shangxueba.com/sxbcn/h5/images/tips_org.png)
A.Seeing
B.When seeing
C.Seen
D.Having seen
第1题
A.照相望远镜、目视望远镜、折射望远镜
B.折射望远镜、反射望远镜、折反射望远镜
C.折射望远镜、反射望远镜、射电望远镜
D.照相望远镜、折射望远镜、反射望远镜
第2题
A.折射望远镜、反射望远镜、折反射望远镜
B.折射望远镜、反射望远镜、射电望远镜
C.照相望远镜、目视望远镜、折射望远镜
D.照相望远镜、折射望远镜、反射望远镜
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