2. 外语
  3. We don’t realize that our eyes are important until ______. Which of the following is TRUE?

We don’t realize that our eyes are important until ______. Which of the following is TRUE?

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问题 We don’t realize that our eyes are important until ______.
Which of the following is TRUE?
选项 A、Sometimes we can not see a thing because we look directly at it.
B、Sometimes we can not see a thing because we use the sides of eyes to see it.
C、The center of the eye is more sensitive than the sides of the eye after dark.
D、The center of the eye is as sensitive as the sides of the eye in daylight.
答案A
解析 从文章最后一段because the center of the eye, which is very sensitive (敏感的)in daylight，is not as sensitive as the sides of the eye after dark. 可以排除C，D。同时，you see a small thing to one side of you, which seems to disappear if you turn your head to its direction. This is because when you turn your head, you are looking at the thing too directly. 可以得出正确选项。
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