问题
选择题
You can't see anything clearly through a telescope unless it ________ correctly to
your sight.
A．adjusts
B．is adapting
C．adapts
D．is adjusted
答案
答案：D
D [望远镜和动词“调整”间是被动关系，故要用被动语态。adjust调整；adapt使适应，改编。]
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