题型:阅读理解 题类:常考题 难易度:普通
重庆市巴蜀中学2017-2018学年高二上册英语期中考试试卷
Jennifer Fish, a weather forecaster may soon be replaced by something truly fishier—the shark.
Research by a British biology student suggests that sharks could be used to predict storms.
Laura Smith, 24, is close to completing her study on shark's ability to sense pressure.
If her studies prove the theory, scientists may be able to monitor the behaviour of sharks to predict bad weather.
Miss Smith had previously studied the behaviour of lemon sharks in the Bahamas.
She then used their close relatives, lesser spotted dogfish (猫鲨), for further research at Aberdeen University.
Her work—thought to be the first of its kind to test the pressure theory—resulted from the observation that juvenile blacktip sharks off Florida moved into deeper water ahead of a violent storm in 2001.
Miss Smith said: “I've always been crazy about traveling and diving and this led me to an interest in sharks.”
“I was delighted to have been able to research in the area for my degree. I know there's so much more we need to understand—but it certainly opens the way to more research.”
It has been discovered that a shark senses pressure using hair cells in its balance system.
At the Bimini Shark Lab in the Bahamas, Miss Smith fixed hi-tech sensors to sharks to record pressure and temperature, while also tracking them using GPS (Global Positioning System) technology.
In Aberdeen, she was able to study the effects of tidal (潮汐的) and temperature changes on dogfish—none of which were harmed. She also used a special lab which can mimic (模拟) oceanic pressure changes caused by weather fronts.
She is due to complete her study and graduate later this year. She says she will be looking for a job which will give her the chance to enrich her experience of shark research.
Here, sleep experts clear up some of the biggest misunderstandings about sleep they see with their patients, which could weaken your ability to have a night of good sleep.
Myth: {#blank#}1{#/blank#}
The latest research shows that the right amount of sleep may vary from person to person and should leave you feeling energized the next day. I'm a sleep doctor. Take myself for example. {#blank#}2{#/blank#}.
Myth: Don't fall asleep with the TV on.
I've cured more people suffering from sleep problems than you can imagine by telling people it's OK to fall asleep with the TV on. {#blank#}3{#/blank#}Control the watching time so it doesn't affect your sleep later in the night.
Myth: You can catch up on lost sleep on the weekend.
{#blank#}4{#/blank#} A Harvard study found that even if you sleep for an extra 10 hours on the weekend to make up for only sleeping six hours a night for two weeks, those extra hours won't improve your reaction times or ability to focus. Plus, sleeping late throws off your biological clock, which can lead to obesity, diabetes, and heart disease.
Myth: Alcohol can help you rest easy.
{#blank#}5{#/blank#} Alcohol may relax you so you nod off quicker, but studies show you'll wake up more and get less of deep sleep you need to feel rested.
A. You need 8 hours' sleep a night. B. A lack of sleep can cause anxiety. C. We take unscheduled naps during the weekend. D. I've been a 6.5-hour sleeper my entire adult life. E. Many people can't turn off their brains, but watching TV helps. F. People commonly use alcohol to fall asleep, but it doesn't work. G. You can't make up for too little sleep by sleeping more at weekends. |
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