题型：语法填空（语篇） 题类：常考题 难易度：困难
安徽省蚌埠铁中2019-2020学年高二上学期英语期中考试试卷
You may not have noticed it before, but many people often sit with a hunched (驼背的) back when they are in a difficult situation, such as trying hard (solve) a math problem. But there's a reason for this: this body position helps to reduce pressure.
However, according to Erik Peper, a health professor at San Francisco State University, poor posture (姿势) may make our brains work not as well as they (normal) do.
Peper and a team of researchers (study) 125 students' performance in a math test and their different postures. The team found that good posture—for example sitting up straight—could help people perform better bad posture when they feel stressed.
Another professor Richard Harvey further explained in Science Daily that sitting with bad posture might make us feel more (comfort), but it actually increases our pressure levels.
So the next time you have to take a test, try sitting upright and taking a deep (breathe). If Peper's study is correct, this small change may have great influence on you.
There are many things lead to poor posture. The good news (be) that posture can be improved at any age by (make) just a few simple corrections in the way one stands, sits and moves.
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