题型：任务型阅读 题类：常考题 难易度：困难
贵州都匀一中2015-2016学年高二下学期英语开学考试试卷
Testing the five-second rule
You may have seen a friend drop food on the floor, pick it up, and eat it, while declaring, “Five-second rule! ” It's said that food dropped on the floor for five seconds or less is still likely to be clean. .
Students at Britain's Aston University, led by microbiology professor Anthony Hilton, tested the rule and found it to have some scientific basis. The study's results show that food dropped for five seconds is less likely to contain bacteria than if it sits there for longer, according to Hilton.
The students also found that the type of flooring where the dropped food lands has an effect. Bacteria are most likely to transfer from tiled (铺瓷砖的) surfaces to moist food when the food has stood there for more than five seconds.
Therefore, consumers should still be cautious. “However, the findings of this study will bring some light relief to those who have been employing the five-second rule for years, despite a general consensus that it is purely a myth,” professor Hilton said in a statement.
The research team at Aston also surveyed 500 people to find out who employs the five-second rule. Of the people surveyed, 87% said they would eat food dropped on the floor, or have done so in the past. “Our study showed people are also more likely to follow the five-second rule, which our research has shown to be much more than an old wives' tale,” Hilton says.
Still, scientists say you should be careful about eating food dropped on the floor, especially if you have doubts about the cleanliness of the surface.
A. But is that true?
B. Carpeted surfaces posed the lowest risk.
C. Of those people, the majority were women.
D. We've just lost our last excuse to eat food off the floor.
E. Usually people recover from the infection in five to ten days.
F. There is still a risk of infection if certain bacteria are present on the dropped surface.
G. A biologist points out that one in six Americans get sick from food poisoning every year.
A strong memory depends on the health and vitality（活力）of your brain. They say that you can't teach an old dog new tricks, but when it comes to the brain, scientists have discovered that this old saying simply isn't true. {#blank#}1{#/blank#}.
Give your brain a workout. Memory, like muscular strength, requires you to “use it or lose it”. The more you work out your brain, the better you'll be able to process and remember information.{#blank#}2{#/blank#}
Don't skip the physical exercise. While mental exercise is important for brain health, that doesn't mean you never need to break a sweat. Physical exercise helps your brain stay sharp. It increases oxygen to your brain and reduces the risk for disorders that lead to memory loss.
Get enough sleep. There is a big difference between the amount of sleep you can get by on and the amount you need to function at your best. {#blank#}3{#/blank#}.
Keep stress in check. Stress is one of the brain's worst enemies. Over time, stress destroys brain cells. Studies have also linked stress to memory loss.
Have a laugh. {#blank#}4{#/blank#} That holds true for the brain and the memory, as well as the body. Unlike emotional responses, which are limited to specific areas of the brain, laughter engages multiple regions across the whole brain.
{#blank#}5{#/blank#} Just as the body needs fuel, so does the brain. You probably already know that a diet based on fruits, vegetables, whole grains, “healthy” fats and lean protein will provide lots of health benefits, but such a diet can also improve memory. For brain health, though, it's not just what you eat—it's also what you don't eat.
A. Eat a brain-boosting diet. B. Play games with memory. C. Laughter is the best medicine. D. But oversleeping is not good for your brain. E. Even skipping a few hours makes a difference! F. You have to shake things up from time to time! G. The human brain has an astonishing ability to adapt and change. |
If you're having trouble getting good sleep through the night (turning, waking up more than once, for example), this text will tell you what you can do to ensure a peaceful night's sleep.
⒈Get on schedule. Changing your sleeping time by more than an hour can severely disturb your sleep quality. {#blank#}1{#/blank#}For example, if you normally wake up at 6 am on weekdays to get to work, you might go to bed around 10 pm, because that's when you start to feel sleepy, and it's also a good time to ensure 8 hours of sleep. If, on the weekend, you sleep until 9 am, you probably won't be able to fall asleep that night until 1am.
⒉Be mindful of what you eat or drink before bed.{#blank#}2{#/blank#}Digestion slows down while asleep, and a full stomach may interrupt sleep. Similarly, you should avoid going to bed on an empty stomach, as a completely empty stomach may equally disturb your sleeping patterns.
⒊{#blank#}3{#/blank#}Exposure to light during the time when you're supposed to be sleeping can destroy your body's internal clock. Turn your light off, or use a very dim(暗淡的)night light. {#blank#}4{#/blank#}They include windows, LED clocks and computer lights.
⒋Change your sleeping position. You may think that it's impossible to control what position you sleep in since you aren't fully aware of what you are doing, but it is possible and it can make a considerable difference. {#blank#}5{#/blank#}
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A.If you wake up at midnight, make an effort to have a comfortable position. B.In other words, sudden change of sleeping time will affect your "biological clock". C.Sleep is considered to be enough only when there is no daytime sleepiness. D.Wait at least three hours after dinner before going to sleep. E.Make note of unusual circumstances. F.Keep the room as dark as possible. G.Try to avoid all sources of light. |
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