Mini dictionary：1．register v．注册，登记 2．sponsor n．赞助人
25．This is most probably a（n）
．
A．report
B．email
C．poster
D．survey
26．Book Aid International helps people in Sub-Saharan Africa
．
A．by giving them money
B．by reading books about childhood
C．by providing books
D．by building them new bookshops
27．The article encourages people to join Book Aid International by
．
A．offering them some books for free as a reward
B．showing them reading books can bring them lots of fun
C．telling them how many friends they can make in Sub-Saharan Africa
D．showing them they can make a great difference to lives of people in other countries．