训练五 事物介绍类
A(2015，昆明)
Ebola (埃博拉) is a river in Africa.In 1976，a __1__ virus (病毒) was found there.The virus can cause people to get very sick and even __2__．So people call the virus Ebola.
Last year Ebola caused the worst problem in Western Africa，and __3__ spread very quickly.Medical experts all over the world did their best to stop Ebola and to treat the people who were sick.
Ebola __4__ starts with fever and headache，kind of like the flu.But it can get worse and cause serious bleeding and __5__ problems.It's very important for infected (受感染的) people to get treatment right away.People who have Ebola need to be cared for in a special way __6__ the illness doesn't spread to doctors，nurses or others in their families.
