根据句意及汉语提示完成句子。

1. English is __________ (极其重要的) for international business.

2. English is now used by about a ___________ (四分之一) of  the world's population.

3. England is an ____________ (工业化的) country.

4.The decision was of great ____________ (重要) to the future  of the business.

5. In ____________ (近来) years there have been many changes.

6. My son said he wanted to learn a third language — __________ (阿拉伯语).

在隔离开关与断路器配合的配电系统中，正确的操作顺序是（）。

A、先合上断路器，再合上隔离开关

B、先合隔离开关，再合断路器

C、隔离开关和断路器应尽量同时合上