The train _____ she was traveling was five minutes late. [ ]

A. that

B. on that

C. by which

D. on which

可再生资源也会变成不可再生资源的原因是[ ]

A．可再生资源得到了合理利用

B．可再生资源被开采利用

C．可再生资源开发利用增加

D．可再生资源遭破坏或污染