题目

As we all know, the spine (脊柱) stands at the center of your health, providing your body with structure and support. It also contains your spine cord, a massive collection of nerves sending electric signals from the rest of your body to your brain. 【1】.Maintaining good posture is one of the most important things you can do to keep your spine healthy. Proper posture means standing or sitting while keeping your spine straight, except for its natural curves. Posture comes into play even when you are asleep. Sleeping on your side puts less stress on your spine than most other positions. 【2】. Especially if you work at a desk most of the day, it’s important to get up and stretch regularly.【3】. Stretch can help the muscles around your spine relax and allow bones to shift into better arrangement. Strength exercises like push-ups (俯卧撑) can also help by strengthening the muscles around your spine. However, don’t overdo the exercise, as repeated movements can strain the muscles around your spine.Finally, your diet affects the health of your spine because many vitamins are necessary for bones and nerves. In particular, vitamins B and D are essential to keep bones healthy, so you may want to consider taking a supplement. 【4】, so it is also helpful to do some of the back exercise outside.Many of the actions necessary to keep your spine healthy are the same as those used to keep your health in other ways. 【5】.A. It can be hard on your back to stay still for too longB. So, to have a healthy spine, you should take the following factors into accountC. Try the following exercises to keep your spine more flexibleD. So protect your back, the rest of the body will benefitE. Exercise is also an important factor in your spine’s healthF. Doing yoga to protect your spine is also a necessary stepG. However, the latter can also be absorbed from sunlight 答案：【答案】【1】B【2】A【3】E【4】G【5】D【解析】这是一篇说明文。本文介绍了脊柱是你健康的中心，为你的身体提供结构和支撑，我们应该如何保持脊柱的健康，文章提出了几点建议。【1】本句位于段尾，起承上启下的作用。上文强调脊柱的重要性，后文为介绍保护你的脊柱的建议，故可推理本句为提出拥有健康脊柱需要考虑到的因素，故选B。【2】根据下文Especially if you work at a desk most of the day, it's important to get up and stretch regularly.尤其是如果你一天的大部分时间都在办公桌前工作，那么有规律地站起来伸展身体是很重要的。可知，本空是强调太长时间保持不动不利于健康，故选A。【3】根据后文Stretch can help the muscles around your spine relax and allow bones to shift into better arrangement.（伸展可以帮助脊柱周围的肌肉放松，让骨骼进入更好的排列。）可知本段主要强调锻炼也是一个保持健康脊柱的重要因素，故选E。【4】根据上文In particular, vitamins B and D are essential to keep bones healthy, so you may want to consider taking a supplement.（特别是维生素B和D对保持骨骼健康是必不可少的，所以你可能要考虑服用补充剂。）与后文so it is also helpful to do some of the back exercise outside.所以在户外做一些背部运动也是有帮助的。可知，推测本空是指维生素D要晒太阳才能被人体吸收，故选G。【5】根据上文Many of the actions necessary to keep your spine healthy are identical to those used to preserve your health in other ways.（许多保持脊柱健康的必要措施与那些用于以其他方式保持健康的措施是相同的。）所以本空是总结，保护你的背部，也有益于其他身体部位，故选D。

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