- UID
- 857007
- 在线时间
- 小时
- 注册时间
- 2013-2-14
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
Time1
1'31''(第一次没看懂,要查完生词才能看懂)
Almost many snail species are just as likely to be left-as right.The researchers don't know why sinistral snails are so rare underwater.
Time2
1'51''
The fungus can provide plants protection from the insects. They make the infestious plants to produce a cocktail of chemicals that repels the insects but attracts a natural aphid predator,even plants not attracted by insects still produce these chemical defenses-as long as they are connected to besiegd plants via a fungal mat.
Time3
2'24''
Modern scientists have now sequenced the genome of the single-celled organism that wreaked havoc on the Irish potato crop, resulting the great famine which helped catalyse the country's blood war of independence from Great Britain.
Time4
4'23''
Weigel's team found that the strain was rooted from Mexico and South American, and they also found the famine strain was less lethal than the modern srain. Some researchers thought that maybe it was the photoes that were unusually susceptible. The famine strain had never seen cultivated potatoes before.
Time5
3'40''
The scientists have found that rhinovirus thrive in frosty conditions. That's why winter is the cold season. But they still wonder that how cold temperatures could help spread the viruses.
Obstacle
6'51''
The scientists believed that the lost painting might be hided in the wall. They did some testing in the wall to see whether they would find some evidence.The results were encouraging. |
|