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课时作业5 Nelson Mandela—a modern hero Ⅰ.阅读理解 (2017·四川省德阳五中月考) The deadliest Ebola outbreak in history that has so far killed almost 1,000 people in Guinea, Liberia, Sierra Leone and Nigeria in West Africa has caused fear around the world. The outbreak is unprecedented (空前的) both in infection numbers and in geographic scope. Officials from the World Health Organization(WHO) said earlier this month the outbreak “is moving faster than our efforts to control it”， reported CNN. So far, the battle against the virus doesn't appear to be slowing down. The Ebola virus is terrifying no matter where it strikes: It's a disease with no cure that causes headaches and fever, severe diarrhea(腹泻), vomiting and bleeding and has been known to kill up to 90 percent of its victims. It is understandable for people to be panicked, but those living outside Africa shouldn't be particularly concerned about contracting the virus, says a Washington Post article. This is because transmission of Ebola requires direct contact with an infected person's blood, vomit or other bodily fluids during the period that he or she is contagious(接触传染的). It is something that is extremely unlikely for anyone but healthcare workers. The virus is not spread by coughing or sneezing. Media outlets in the US and the UK are using terrifying headlines, wrongly claiming that people infected with the virus have traveled to their countries. | 
