手机APP下载

您现在的位置: 首页 > 在线广播 > CNN News > 2021年上半年CNN news > 正文

美国将释放7.5亿只转基因蚊子减少疾病传播

来源:可可英语 编辑:aimee   可可英语APP下载 |  可可官方微信:ikekenet
  


扫描二维码可进行跟读训练
  下载MP3到电脑  [F8键暂停/播放]   批量下载MP3到手机
oA6o1ER,KJ=4B(D2aA

SZSGsYgD9Prz=M2TH

Saltmarsh, Culex and Asian Tiger are all types of what? Ferns, wasps, mosses or mosquitoes. These are all mosquitoes in addition to the Aedes aegypti mosquito that spreads a number of diseases.
For the first time ever, genetically modified mosquitoes are being released in the U.S. The project's taking place in the Florida Keys. It was approved by the U.S. Environmental Protection Agency last May and the state of Florida issued an experimental use permit last June. It allows the release of up to 750 million genetically altered mosquitoes this year and next.
The targeted mosquito can spread yellow fever, dengue and the Zika virus. There've been at least two small outbreaks of dengue in the Keys over the last 12 years. The project will release genetically altered male mosquitoes with the idea that they'll mate with the females and pass along a deadly gene that kills female mosquito larvae.

syRJ.w.-,Tu

美国将释放转基因蚊子.jpeg
Only female mosquitoes bite. So the intent is to wipe out biting mosquito populations in the Keys. The company that produces the GMO mosquitoes says a different type of it has been used in Brazil, the Cayman Islands and Panama and that it's been widely successful. But critics, including the Florida Keys Environmental Coalition, say the project's being forced on them. That they're being treated as guinea pigs.
They're concerned that the newer GMO mosquitoes being released haven't been tested as long and they question what could happen to people or animals health of genetically modified females survive and then bite. Critics are considering legal action but the trial has begun.

s3m1IPYY9&uAmq3

1Jys,7_;C]_AK

rqlMX-0T]GgLYz-MUzI;+pj+()SN,F;yzU(oJH]I4(|^dx[Bxv9v

重点单词   查看全部解释    
spill [spil]

想一想再看

v. 溢出,洒,使 ... 流出,泄漏
n.

 
permit ['pə:mit,pə'mit]

想一想再看

n. 许可证,执照
v. 允许,许可

联想记忆
turtle ['tə:tl]

想一想再看

n. 海龟

联想记忆
concerned [kən'sə:nd]

想一想再看

adj. 担忧的,关心的

 
population [.pɔpju'leiʃən]

想一想再看

n. 人口 ,(全体)居民,人数

联想记忆
trial ['traiəl]

想一想再看

adj. 尝试性的; 审讯的
n. 尝试,努力

 
experimental [iks.peri'mentl]

想一想再看

adj. 实验(性)的,试验(性)的

 
legal ['li:gəl]

想一想再看

adj. 法律的,合法的,法定的

联想记忆
release [ri'li:s]

想一想再看

n. 释放,让渡,发行
vt. 释放,让与,准

联想记忆
fever ['fi:və]

想一想再看

n. 发烧,发热,狂热
v. (使)发烧,(使

 

发布评论我来说2句

    最新文章

    可可英语官方微信(微信号:ikekenet)

    每天向大家推送短小精悍的英语学习资料.

    添加方式1.扫描上方可可官方微信二维码。
    添加方式2.搜索微信号ikekenet添加即可。