1.将下列含有限制性定语从句的复合句译成汉语：

1). Everything that is around us is matter.   我们周围的一切都是物质

2). He is the only one among us that knows French.  他是我们中唯一懂法语的人。

3). I know the reason why he came late.  我知道他来迟的原因。

4). Certain ideas, principles, and laws often form the foundation on which other ideas, principles and laws of a science are constructed.  一些思想、原则和法律往往会成为其他思想、原则和法律赖以形成的基础。

5). Stainless steels must contain a minimum of 10% chromium. This is the reason why they are stainless.   不锈钢至少要含有10%的铬，这就是不锈钢不生锈的原因。

6). Electrical energy that is supplied to a lamp can be turned into light energy.  供照明的电能可以转化为光能。

7). An electric field is a space where an electric force exists.