【每日阅读训练第四期——速度越障20系列】【20-01】科技

XLJIAYOU

2:00
Italian scientists fight back on animal testing.
2:35
a debate about the reserachers and animals-right activists.
1:57
US scitneist has revived interest in using embryonic stem cells to treat disease.
2:43
stem-cell policy has some difficulties.
4:30
gene switches made prairie voles fall in love.
5:39
a new method to predict austim.
20期开始了，最近有点小疲惫，坚持~~