【简答题】Dr.Jack Todd is very interested in clean water .__小题1:_,so it's natural that he is to developer of a small and affordable system(系统)to clean waste water, His “Living Machine' can clean wastewater in ...
【简答题】完形填空 The science teacher believed very strongly in practical work as a means of teaching science effectively, and she wanted her pupils' parents to see how well their children were learning 1 her meth...