【每日阅读训练第四期——速度越障19系列】【19-14】科技

joanfighter

time1 00:01:34.44       
dogs are derived from wolves but they have many differences in  some aspects. some reaserch shows that dogs lost some of their ability during this period.
time2 00:01:25.41
dog do lost its ability to learn from its own species. a reaserch prove this thought is true. but dogs may gain learning intelligence from human.
time3 00:01:54.81
immune system drugs are effecting the cancer medicine.its prospect tends to be better.
time4 00:01:09.52
Y this kind of medicine has its wide market prospect.now the cancer medicine market development. some people hold optimate development in future.
time5 00:01:05.55
frozen food named B can be eaten even after hundreds of years.
time6 00:04:48.49
main idea: K is kind of tube used to keep patients breathing. and a babyboy named Kai is a exemple to put out this kind of new development
altitude:positive
para connecting:
a boy need a tube to help him breath.and K is used to do it.
but there is a problem so the reaserchers find out a 3D tube K to resovle this technical problem.