閱讀下面材料，從每題所給的三個選項（A、B和C）中，選出最佳選項。
What should you take in with you when you take an exam? Pen, pencil, eraser, ruler … and don’t forget a bottle of water!
According to a study held in London, students who bring water into exams may improve their grades by up to 10%.
Scientists in UK did the study on 448 students. The students were studying for different degrees  at the University of East London. Only 25% of them entered the exam hall with water.
Scientists then compared their exam results with their normal schoolwork grades. They found that all those who had brought water with them got better grades by 2% to10%.
Scientists also predicted the students’ scores according to their normal schoolwork. They wrote down their possible scores on paper before exams.
It is unclear why drinking water improves exam results. But scientists say having enough water in our bodies and not feeling thirsty could have a helpful effect on our brains. Drinking water may also reduce anxiety (焦慮), which has a bad effect on exam performances.
“Whatever the explanation is, it is clear that students should try hard to stay hydrated (含水的) with water during exams,” one of the scientists said.
So next time, when you are going to have a big exam, try bringing a bottle of water with you. It may help you pass the exam!
【小題1】According to the study, students who bring water to exams may ______.
A. get better scores
B. feel worried in exams
C. be smarter than others
【小題2】How many students brought water during the exam in the study by the UK scientists?
A. 25.   B. 112.   C. 448.
【小題3】Having enough water in exams ______.
A. makes the students smarter
B. helps the students stay calm
C. improves the students’ scores by 20%
【小題4】The underlined word “predicted” means “______”.
A. 預(yù)測          B. 提高         C. 更正
【小題5】What’s the best title for the passage?
A. The more water, the higher scores
B. Anxiety in the exams
C. Water helps in exams


【小題1】A
【小題2】B
【小題3】B
【小題4】A
【小題5】C

解析【小題1】由“students who bring water into exams may improve their grades by up to 10%.”可知。
考點：推理計算題。
【小題2】根據(jù)文章可知是對448人做研究，有25%的人帶水，可推算出是112人。
【小題3】由“But scientists say having enough water in our bodies and not feeling thirsty could have a helpful effect on our brains. Drinking water may also reduce anxiety (焦慮), which has a bad effect on exam performances.”可知
【小題4】學(xué)生的分數(shù)是根據(jù)平日學(xué)習推測的，所以A符合句意。
【小題5】整篇文章就是通過研究表明水對提高成績有一定的幫助。

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