【Native Speaker每日综合训练—29系列】【29-08】科技

wensd1111

1 A 01:33
2 A 01:29
3 A 01:52
4 A 01:01
5 A 01:18
6 A 03:49
gut microbe help human health by adopting microbe consistents according to the diet human eat. experiment about food and gut microbe changings. and futher study from i was given.