2015—2016 外研版必修四 module 4 reading (4)
2015—2016 外研版必修四 module 4 reading (4)第2页

 Many scientists are great because they have made great d__________ or i__________. That is to say they have made great c___________ to the wrold. This class let’s get to know some some of them.

iscoveries

nventions

ontributions

Great Scientists