7、eycan'taffordtheschoolfees.B.Ebolaspreadsinthecountry.C.Therearenotenoughschools.D.Theyhavetoworkonthefarms.答案 B [细节理解题。根据第一段“EbolahasstruckhardinSierraLeone.Morethanonemillionchildrenhavebeenunabletoattendschool.”可知,塞拉利昂共和国的孩子们不能上学是因为埃博拉病毒在国内的传播。]2.HowdochildreninSierraLeonegetknowle