The English language _______ the rules and vocabulary each group of people brought to Britain with them.

A．is consisted of

B．is made up of

C．composed of

D．consisting of

弯曲试验是测定焊接接头弯曲时的（）的一种试验方法。

A.抗拉强度

B.塑性

C.硬度

D.冲击韧性