------- Hi, Jane! How nice meeting you here in London! -------Oh, it’s you, Frank. I ____ that you _____ in London.

A．didn’t expect, were

B．don’t expect, are

C．didn’t expect, are

D．don’t expect, were

劳动防护用品可按其防护性能、防护部位、用途进行分类。根据国家安全生产监督管理总局发布的《劳动防护用品监督管理规定》，按防护性能将劳动防护用品分为( )大类。

A．二

B．三

C．四

D．五