A篇
Crossing your legs is an extremely common habit; most people don’t even notice that they’re doing it when they sit down. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.
A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason this happens is because the blood in your legs has to work against gravity to be pumped back to your heart, crossing one leg over the other increases resistance, making it even harder for the blood to circulate. This causes your body to increase your blood pressure to push the blood back to the heart. You won’t feel any immediate effects, but if you sit for long periods of time it’s important that you take note of how long you have your legs crossed for. You shouldn’t have your legs crossed for more than 15 minutes, and it’s important that you get up and walk around at least once every hour.
Crossing your legs can also lead to neck and back pain. Ideally, it’s best for our bodies to sit with our feet planted flat, hip width apart, on the floor, but it’s not easy to maintain perfect posture all day at the office. When you sit with your legs crossed your hips are in a twisted position, which can cause one of your pelvic bones to rotate. Since your pelvic bone supports your neck and spine, this can cause pressure on your lower and middle back and neck.
You also might notice that when you sit with your legs crossed for long periods of time your feet and legs get tingly or have the feeling of being asleep. This is because when one leg sits on top of the other it causes pressure on the veins and nerves in your legs and feet. It can cause numbness and/or temporary paralysis in the legs, ankles, or feet. While the feeling of discomfort may only last a minute or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.
So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.
1. Crossing legs when sitting may cause the following except______.
A. blood pressure increase B. neck and back pain
C. temporary nerve damage D. numbness in the legs
2. Which of the following is true?
A. All people are used to sitting with legs crossed without their own notice.
B. Researchers are unaware of health problems caused by the common sitting habit.
C. It is crucial but impossible to get into the habit of sitting with feet planted flat.
D. Crossing legs increases resistance of blood circulation throughout the body.
3. After reading this passage, what will people be more likely to do?
A. Maintain a healthy sitting posture B. Find a comfortable way to sit
C. Move the neck to ease discomfort D. Do exercises to lower blood pressure
【答案】1. C 2. D 3. A
【解析】
【分析】
本文说明文。人们在现实生活中翘二郎腿的习惯是非常不好的，对身体有害，因此要改掉这个坏习惯。
【1题详解】
?细节理解题。第二段第一句“sitting with your legs crossed can increase your blood pressure.”可知翘二郎腿导致血压升高，故A是正确的。第三段第一句“Crossing your legs can also lead to neck and back pain”可知B正确。第四段…repeatedly crossing your legs until they feel numb can cause permanent nerve damage可知只有在多次反复地在腿脚麻木情况下继续保持二郎腿姿势，才会最终导致永久性神经损伤，而不是暂时性temporary，可知C是不正确的。第四段中的…when you sit with your legs crossed….It can cause numbness…in the legs可知，当你翘二郎腿时会导致腿麻木，可知D 正确。综合所述C符合题意。
【2题详解】
细节理解题。第一段第一句…most people don’t even notice…可知A项太绝对了。第二段第一句及文章的内容可知，研究者已知道翘二郎腿的危害，故B项与文章事实相反。最后一段的建议人们养成双脚落地的坐姿习惯，可知C项与文章不符合。第二段中的crossing one leg over the other increases resistance, making it even harder for the blood to circulate..可知，翘二郎腿会两腿交叉会增加阻力，使血液循环更加困难。由此可推断出D正确。
【3题详解】
推理判断题。本文主要描述了人们在现实生活中翘二郎腿对人体的危害。因此要改掉这个坏习惯。最后一段“So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.”可知，在最后一段给出了一些建议，就是要保持健康的坐姿，这样才会健康。因此为了健康，人们可能会听从建议，保持健康的坐姿。分析选项可知A正确。
【点睛】推理判断试题属于高层次阅读理解题。这种题型包括判断题和推理题。这两类题常常相互依存，推理是为了得出正确的判断，正确的判断又依赖于合乎逻辑的推理。做好该题型要从整体上把握语篇内容，在语篇的表面意义与隐含意义、已知信息与未知信息间架起桥梁，透过字里行间，去体会作者的“弦外之音”。如第3小题就属于推理判断题。本文主要描述了人们在现实生活中翘二郎腿对人体的危害。因此要改掉这个坏习惯。最后一段“So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.”可知，在最后一段给出了一些建议，就是要保持健康的坐姿，这样才会健康。因此为了健康，人们可能会听从建议，保持健康的坐姿。分析选项可知A正确。
推理题要求在理解原文表面文字信息的基础上，作出一定判断和推论，从而得到文章的隐含意义和深层意义。推理题所涉及的内容可能是文中某一句话，也可是某几句话，但做题的指导思想都是以文字信息为依据，既不能做出在原文中找不到文字根据的推理，也不能根据表面文字信息做多步推理。也就是说，要做到判断有据, 推论有理, 忠实原文。切忌用自己的观点代替作者的本意，切忌片面思考，得出片面结论。
