单项选择题

Which of the following statements best expresses the main idea of the passage

A. Glass is very useful because it has many 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 message is an interesting new development.

<上一题目录下一题>

热门试题

单项选择题

From the passage, you can tell that people prefer glass fibre cables to copper cables because ______.

A. glass fibres are less expensive
B. glass fibres deliver message directly

C. glass fibres are more up to date
D. glass fibre are easier to make

单项选择题

A. In the supermarket. B. In the department store. C. On the Internet. D. In the specialty shop.

A. In the supermarket.
B. In the department store.

C. On the Internet.
D. In the specialty shop.