1 . On Wednesday, the World Health Organization announced that the number of people killed by Ebola has now risen to over five thousand, with more than fourteen thousand ______.
| A．having infected | B．to infect |
| C．infected | D．infecting |
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2 . Washing hands thoroughly is one of the effective ways to avoid ________ by virus.
| A．being infected | B．infecting |
| C．to be infected | D．to infect |
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