They tell us when to get up or when we’re running late for work and whether we are in danger of missing our favourite TV programme. But while our daily routines rely on clocks that tell us the time, science is discovering that our well-being is influenced by a very different kind of timepiece. Circadian rhythms---the human body’s own internal clock---have a powerful influence on our health and behaviour. They are programmed from birth and control functions ranging from temperature and blood pressure to sleep patterns.
In recent years researchers have also discovered that this built-in mechanism can influence everything from the way we react to medicines to how well we learn music.
The latest example, from experts at Harvard University in the US, shows that the human body clock can even dictate whether or not we are likely to tell the truth. Researchers found it was easier for people to fib（撒小谎） in the afternoon because, as they were tired, the self control that would normally prevent them from lying started to break down. Tiredness made it harder to resist the temptation to tell lies---especially if it meant they got a financial reward at the end.
“The body clock has a great effect on us all,” says Professor Jim Horne from the Sleep Research Centre at Loughborough University. “Most people tend to feel good around late morning and then decline in the early afternoon. But the time most of us will feel our sharpest is between 6pm and 8pm. That’s because sleepiness tends to build up throughout the day. By early evening our body clock kicks in to wake us up. One reason may be to ensure we get home safely. When our ancestors were coming home after hunting all day their internal clocks kicked in to get them home in one piece.”
So what effects do circadian rhythms have and what’s the best time of day to take advantage of them?
1.The underlined word “They” in the first paragraph refers to .
A. our clocks B. scientists and experts
C. our daily routines D. circadian rhythms
2.The research referred to in Paragraph 3 found that people tend to .
A. tell lies when they are tired
B. tell lies if they are rewarded
C. lose temper as they become tired
D. break down because they are tired
3. According to the passage, when are people most quick-thinking?
A. In the morning. B. Around midday.
C. In the late afternoon. D. In the early evening.
4.What information will the writer probably present following the last paragraph?
A. Some practical suggestions to prevent people from lying.
B. Examples of how the human body clocks control the body.
C. Examples of the most suitable time to do different activities.
D. An explanation of how the human body clock controls the body.
5. What is the best title for the passage?
A. Rebuild your body clock B. Timing is everything
C. Sleep more, lie less D. Your time is limited
高三英语阅读理解中等难度题
They tell us when to get up or when we’re running late for work and whether we are in danger of missing our favourite TV programme. But while our daily routines rely on clocks that tell us the time, science is discovering that our well-being is influenced by a very different kind of timepiece. Circadian rhythms---the human body’s own internal clock---have a powerful influence on our health and behaviour. They are programmed from birth and control functions ranging from temperature and blood pressure to sleep patterns.
In recent years researchers have also discovered that this built-in mechanism can influence everything from the way we react to medicines to how well we learn music.
The latest example, from experts at Harvard University in the US, shows that the human body clock can even dictate whether or not we are likely to tell the truth. Researchers found it was easier for people to fib（撒小谎） in the afternoon because, as they were tired, the self control that would normally prevent them from lying started to break down. Tiredness made it harder to resist the temptation to tell lies---especially if it meant they got a financial reward at the end.
“The body clock has a great effect on us all,” says Professor Jim Horne from the Sleep Research Centre at Loughborough University. “Most people tend to feel good around late morning and then decline in the early afternoon. But the time most of us will feel our sharpest is between 6pm and 8pm. That’s because sleepiness tends to build up throughout the day. By early evening our body clock kicks in to wake us up. One reason may be to ensure we get home safely. When our ancestors were coming home after hunting all day their internal clocks kicked in to get them home in one piece.”
So what effects do circadian rhythms have and what’s the best time of day to take advantage of them?
1.The underlined word “They” in the first paragraph refers to .
A. our clocks B. scientists and experts
C. our daily routines D. circadian rhythms
2.The research referred to in Paragraph 3 found that people tend to .
A. tell lies when they are tired
B. tell lies if they are rewarded
C. lose temper as they become tired
D. break down because they are tired
3. According to the passage, when are people most quick-thinking?
A. In the morning. B. Around midday.
C. In the late afternoon. D. In the early evening.
4.What information will the writer probably present following the last paragraph?
A. Some practical suggestions to prevent people from lying.
B. Examples of how the human body clocks control the body.
C. Examples of the most suitable time to do different activities.
D. An explanation of how the human body clock controls the body.
5. What is the best title for the passage?
A. Rebuild your body clock B. Timing is everything
C. Sleep more, lie less D. Your time is limited
高三英语阅读理解中等难度题查看答案及解析
Is Fresh Air Really Good for You?
We all grew up hearing people tell us to “go out and get some fresh air.” 1. According to recent studies, the answer is a big YES, if the air quality in your camping area is good.
2. If the air you’re breathing is clean—which it would be if you’re away from the smog of cities—then the air is filled with life-giving, energizing oxygen. If you exercise out of doors, your body will learn to breathe more deeply, allowing even more oxygen to get to your muscles(肌肉) and your brain.
Recently, people have begun studying the connection between the natural world and healing(治愈). 3. In these places patients can go to be near nature during their recovery. It turns out that just looking at green, growing things can reduce stress, lower blood pressure, and put people into a better mood(情绪).Greenery is good for us. Hospital patients who see tree branches out their window are likely to recover at a faster rate than patients who see buildings or sky instead. 4. It gives us a great feeling of peace.
5.While the sun’s rays can age and harm our skin, they also give us beneficial Vitamin D . To make sure you get enough Vitamin D—but still protect your skin—put on sunscreen right as you head outside. It takes sunscreen about fifteen minutes to start working, and that’s plenty of time for your skin to absorb a day’s worth of Vitamin D .
A.Fresh air cleans our lungs.
B.So what are you waiting for?
C.Being in nature refreshes us.
D.Another side benefit of getting fresh air is sunlight.
E.But is fresh air really as good for you as your mother always said?
F.Just as importantly, we tend to associate air with health care.
G.All across the country, recovery centers have begun building Healing Gardens.
高三英语七选五中等难度题查看答案及解析
The biggest problem for most plants, which ______ just get up and run away when threatened, is that animals like to eat them.
A. shan’t B. can’t C. needn’t D. mustn’t
高三英语单项填空中等难度题查看答案及解析
The biggest problem for most plants, which ______ just get up and run away when threatened, is that animals like to eat them．
A．can’t B．shan’t
C．needn’t D．mustn’t
高三英语单项填空简单题查看答案及解析
The biggest problem for most plants, which ______ just get up and run away when threatened, is that animals like to eat them．
A．can’t B．shan’t
C．needn’t D．mustn’t
高三英语单项填空中等难度题查看答案及解析
I thought we’d be late for the concert, _______ we ended up getting there ahead of time.
A. but B. or C. so D. for
高三英语单项填空中等难度题查看答案及解析
I thought we’d be late for the concert, ______ we ended up getting there ahead of time.
| A．but | B．or | C．so | D．for |
高三英语单项填空中等难度题查看答案及解析
The biggest problem for most plants, which ________just get up and run away when threatened, is that animals like to eat them.
A. shall not B. can't
C. needn't D. mustn't
高三英语单项填空中等难度题查看答案及解析
The biggest problem for most plants,which_______just get up and run away when threatened,is that animals like to eat them.
A.shan’t B.can’t
C.needn’t D.mustn’t
高三英语单项填空中等难度题查看答案及解析
I thought we'd be late for the concert，________ we ended up getting there ahead of time.
A．but B．or C．so D．for
高三英语单项填空中等难度题查看答案及解析