It’s very dangerous to be ____ to the SARS virus without any protection.

A．disclosed         B．uncover          C．affected         D．exposed

 It’s very dangerous to be ____ to the SARS virus without any protection.

       A．disclosed           B．uncover             C．affected             D．exposed

It's very dangerous to be ________ to the SARS virus without any protection．

1. A.
   disclosed
2. B.
   uncover
3. C.
   affected
4. D.
   exposed