题目内容：

These days, preventing ourselves from being infected(传染）by virus(病毒）MERS becomes a hot topic again. In order to avoid it, we should _________.

①develop good habits

② not touch or share anything with the patients who were infected

③ put everything that patients ever used into dustbins quickly

④ make sure the patient is really ill before sending him or her to the hospital

⑤ take exercise regularly to make our bodies strong

A．②③④

B．①②⑤

C．③④⑤