SCIENCE STUDY

Helping save the world

作者：21ST

美国中学生投身水质采样检测。词数 377 建议阅读时间 7分钟测试见 IV版

Josh Hill, a biology teacher at Mar Vista High School in California, US, often gets sick after swimming in the ocean at Imperial Beach in California.

点击阅读全文

对本期电子报订户、有效期内的VIP教师会员和本学期高一尊享卡用户，我们开放所有内容：
如果您拥有以上权限，请点这里登录；
订阅电子报，请点这里；
激活VIP教师卡，请点这里；
激活21英语尊享卡，请点这里。

相关文章
Soaring to the world No 1 spot （941期）Chinese local heritage honored by the World Tourism Organization （933期）Intertwined through World War II （932期）Building swim school in Africa to save more lives （925期）Letting pets see the world （925期）Saving lives with technology on World First Aid Day （918期）Representing our world （916期）