2. 外语
  3. At each end of the tube ______ , one which gathers light and one which magnifies the image.

At each end of the tube ______ , one which gathers light and one which magnifies the image.

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问题 At each end of the tube ______ , one which gathers light and one which magnifies the image.
选项 A、are two lenses there
B、two lenses are
C、are two lenses
D、two lenses are there
答案C
解析 这是一个全部倒装句，主要是为了把较长的主语置于句尾，以免头重脚轻。
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