托福阅读：Heart beat

考出好成绩是许多学生和家长的共同期望，最近有研究发现，学生应试时的心跳速度越快，考出的分数越高。下面的新托福考试阅读练习资料就将与各位讨论这个现象的原因。

The higher a student's heart beat increases during an examination, the more likely they are to achieve better result, according to new research.

The survey, undertaken by AQA exam board, found that on average the most successful pupils' heart beat reached a level that was 23.9 beats per minute (bpm) faster than normal.

And those who performed at the bottom end of the class were found to have a minimal increase in heart beat - only around 3.9bpm more than their normal rate.

One of the leaders of the research, Suzanne Chamberlain, said: "This increase in heart rate is a sign that arousal encourages them (the students) to be more alert. It encourages them to work to the best of their ability, it sets the scene for better performance."

The students were fitted with heart monitors in the hours before the exam. For the highest performers, their heart rate increased from 79.8 beats a minute to 103.7 while sitting the exam. And the pulses of those who did not fare as well - their rate only went up slightly, from 78.5 to 82.4.

But the study does not recommend that those taking exams use stimulants to boost their heart rate.

以上就是这篇托福阅读材料，同学们可以积累其中的词汇及优美句式，找到托福阅读段的主题句，了解托福阅读的几个出题点。托福阅读训练是个长期的过程。大家如果每天做几篇阅读，坚持下来，一定会有不小的进步。预祝大家能有一个好的阅读成绩。