题型:阅读理解 题类:常考题 难易度:普通
贵州省遵义市2018-2019学年度高二上学期英语期末考试试卷(含小段音频)
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.
He and a group of students are raising awareness(意识)about water pollution by taking weekly water samples(样本)of the ocean and publishing their results online.
Every Thursday, Hill and his students collect water from the ocean. Students then take the samples to their school and test them for levels of bacteria. Usually, samples closer to the border have higher levels of bacteria, Hill said.
“Water quality is usually the worst at the southern end and it increasingly gets better,” he said.
Hill collects the samples on Thursdays so that students can publish the results on the Surfrider Foundation's website in time for the weekend. The Surfrider Foundation has give Mar Vista lab equipment and promote the students' results on its site.
Most of Hill's students grew up in Imperial Beach. Many have gotten sick from the water or know someone who has.
Cameron Bell, 17, who is currently applying to college, wants to pursue a STEM career. He appreciates the fact the he can get lab experience at school. “Our research really impacts our community because it's keeping people safe,” he said.
On a recent Thursday morning, Anthony Gass, 15, collected some samples. Before he got into the water, his classmates helped him put on waterproof(防水的)clothes and tie a rope around his waist to protect him from the onrush of water.
Hill said the protection probably wasn't necessary, but that it was better to be safe than to be sorry. “We just want to make sure we protect the students,” he said.
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