2. 外语
  3. We don’t realize that our eyes are important until ______. Cataracts is a kind of illness that ______.

We don’t realize that our eyes are important until ______. Cataracts is a kind of illness that ______.

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问题 We don’t realize that our eyes are important until ______.
Cataracts is a kind of illness that ______.
选项 A、must lead to blindness
B、can not be treated by operations
C、can be cured
D、can change the color of eyes
答案C
解析 本题从文章第四段Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them. 可以看出答案。
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