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1、- 1 - 河北省武邑中学河北省武邑中学 2018-20192018-2019 学年高一英语上学期寒假作业学年高一英语上学期寒假作业 2323 第二部分第二部分 阅读理解阅读理解 阅读下列短文，从每小题所给的阅读下列短文，从每小题所给的 A A、B B、C C、D D 四个选项中，选出最佳选项，并在答题纸四个选项中，选出最佳选项，并在答题纸 上将其涂黑。上将其涂黑。 A A IsIs ItIt BadBad toto CrossCross YourYour LegsLegs WhenWhen YouYou Sit?Sit? Crossing your legs is an extremely
2、common hab it; most people dont even notice that theyre 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 y
3、our 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 increase s resistance, making it even harder for the blood to circulate. This causes your body to
4、increase your blood pressure to push the blood back to the heart. You wont feel any immediate effects, but if you sit for long periods of time its important that you take note of how long you have your legs crossed for. You shouldnt have your legs crossed for more than 15 minutes, and its important
5、that you get up and walk around at least once every hour. Crossing your legs can also lead to neck and back pain. Ideally, its best for our bodies to sit with our feet planted flat, hip width apart, on the floor, but its not easy to maintain perfect posture all day at the office. When you sit with y
6、our 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 perio
7、ds 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 di
8、scomfort 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
9、save your - 2 - health in the long run. 1. According to para 2, we can infer that_ A. its no big deal to cross our legs for less than 15 minutes. B. we will feel uncomfortable at the moment we cross the legs. C. we should take a walk every hour after sitting still. D. crossing legs while sitting mak
10、es it harder to circulate our blood. 2. How many health problems can be caused by crossing legs according to the text? A. 2 B3 C.4 D. 5 3. Which of the following best shows the structure of the passage? A. B C. D. B Microsoft has developed a new smartphone app that interprets eye signals and transla
11、tes them into letters, allowing people with motor neurone disease to communicate with others from a phone. The GazeSpeak app combines a smartphones camera with artificial intelligence to recognize eye movements in real time and convert them into letters, words and sentences. For people suffering fro
12、m ALS（渐冻症）, also known as motor neurone disease, eye movement can be the only way they are able to communicate. “Current eye-tracking input systems for people with ALS or other motor impairments are expensive, not stable under sunlight, and require frequent re-calibration and substantial, relatively
13、 immobile setups,” said Xiaoyi Zhang, a researcher at Microsoft who developed the technology. “To ease the drawbackswe created GazeSpeak, an eye-gesture communication system that runs on a smartphone, and is designed to be low-cost, stable, portable and easy to learn.” The app is used by the listene
14、r by pointing their smartphone at the speaker. A chart that can be stuck to the back of the smartphone is then used by the speaker to determine which eye movements to make in order to communicate. - 3 - The sticker shows four grids(网格) of letters, which each correspond to a different eye movement. B
15、y looking up, down, left or right, the speaker selects which grids(网格) 24the letters they want belong to. The artificial intelligence algorithm is then able to predict the word or sentence they are trying to say. Zhangs research, Smartphone-Based Gaze Gesture Communication for People with Motor Disa
16、bilities, is set to be presented at the Conference on Human Factors in Computing Systems in May. 3. Which of the following is the correct order of how the app works? a. The sticker puts forward four grids of letter. b. The listerner points the phone at the speaker c. The speaker uses a chart to determine which eye movement to make. d. The users use their eye movements to select
