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  3. Glasses protect people's eyes from bright light. Microscopes make tiny thing...

Glasses protect people's eyes from bright light. Microscopes make tiny thing...

admin2020-12-24  32
问题 Glasses protect people's eyes from bright light. Microscopes make tiny things larger （ 1 ） we can examine them. Telescopes make objects that are far away appear （ 2 ） closer to us. However in recent years plastics have replaced glass （ 3 ） conditions where glass might be easily broken there are new uses to be developed for glass that were never imagined in the （ 4 ） . Perhaps the greatest （ 5 ） of glass is that its constituent (构成的).parts are inexpensive and can be found all over the world.
根据短文内容，在A、B、C、D、E五个选项中，选出最佳答案填入文中【4】处。（）.
选项 A. much
B. so that
C. advantage
D. past
E. on
答案D
解析眼镜能够保护人的眼睛因强光造成的伤害。显微镜可以使得微小的东西放大，这样我们才能观测到这些微小的事物。望远镜能够缩短遥远的物体跟我们之间的距离。然而，近些年，塑料在 某些条件下替代了较容易破碎的玻璃。玻璃的新用途被开发出来，这在过去是无法想象的。也许 玻璃最大的优点在于它的构成部分相对便宜，并且在世界任何地方都可以得到。
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