题型：单词拼写（语篇） 题类：常考题 难易度：普通
牛津译林版高中英语高三上册模块11 unit 3 the secret of success 同步练习
A recent study suggests that students who bring water into exams may improve their grades by 10 percent．
Scientists then (比较) their exam results with their normal schoolwork grades．They found that all those had brought drinks with them got better grades．
Scientists also considered the students 'schoolwork and (预计)their grades．This was to make sure that the reason was not simply that smarter students were more (有可能)to bring drinks with them．
is unclear why drinking water improves exam results．But scientists say having enough water in our b and not feeling thirsty could have a helpful effect our brains．Drinking water may also cut d on anxiety ,which affects exam performances．
So next time， w you are going to have a big exam，try bringing a bottle of water with you．Who knows—it may help you p the exam!
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