According to the passage, people started to make glass ______. Which statement can be the main idea of the passage?

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问题 According to the passage, people started to make glass ______.
Which statement can be the main idea of the passage?

选项 A、Glass is very useful because it has unusual qualities.
B、Light signals have changed the use of glass in industry.
C、Glass fibres have reduced the cost of telephone communication.
D、The use of glass fibres to carry telephone messages is an interesting new development.

答案D

解析整篇文章都在讲玻璃的一种新兴技术——通信。

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本试题收录于：公共英语二级笔试题库公共英语（PETS）分类

公共英语二级笔试

公共英语（PETS）

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According to the passage, people started to make glass ______. Which statement can be the main idea of the passage?

公共英语二级笔试

公共英语（PETS）

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