Many people enjoy the beauty of the snow. But do you really know the snow? Here are three biggest snow myths that will surprise you.
First of all, it’s a myth that no two snowflakes are the same. In 1988, a scientist found two identical snow crystals that had both formed in a snow storm in Wisconsin, USA. Since then scientists have come to learn that snowflakes can only form into 35 different shapes. Although scientists are also unsure why exactly the various shapes of snowflake form, they have identified eight major shapes, with each of these eight shapes having several different variations.
“Snow is white” is the second biggest myth. It’s actually colorless. Snow is made up of ice particles, and ice is translucent, which means that light does not pass through it easily, but rather it gets reflected. When light hits a snowflake, it gets reflected back from the snowflake’s many surfaces, often bouncing between these surfaces, and because of this that light is reflected back to our eyes as the color white. This is why, up close or magnified, a snowflake always looks clear, yet in reality appears as white.
Lastly, snow doesn’t always appear to us as the color white. Not counting the infamous yellow snow that everyone knows never to eat, you can also get naturally blue snow or even pink snow.
Deep snow can sometimes appear blue in color because the extra layers of snow create a filter for light, which causes more red light to be absorbed by the snow than blue light, meaning that it looks blue.
Likewise, snow can sometimes appear pink in mountainous regions or coastal Polar Regions due to it containing cryophilic fresh-water algae that have a red pigment in them.
As an interesting bonus fact, the fur of Polar Bears is actually made up of translucent fibers, trapping light between its many surfaces and making the Polar Bear look white, when in actuality if you were to examine a single piece of Polar Bear fur up close it would look clear – just like a snowflake.
It’s also a commonly known fact that, if shaved, a Polar Bear would be black in color. The reason a Polar Bear’s skin is black is because black is the color which locks in the most heat.
1.According to the passage, the underlined word “myth” means _________.
A.tale B.riddle
C.mystery D.misunderstanding
2.Why does a snowflake appear as white?
A.Because snow is white.
B.Because snow is made up of ice particles.
C.Because ice is translucent, light does pass through it easily.
D.Because the lights reflect back and forth between the snowflakes’ surfaces.
3.Which of the statement is true?
A.Polar Bears’ black skin can help them keep warm.
B.The color of the snowflakes are white, yellow, blue and pink.
C.Scientists have identified eight minor shapes of the snowflake.
D.The snow absorbs more blue light than red light, making it look blue.
4.Which of the following doesn’t belong to the three biggest snow myths?
A.Snow is white B.Snow always looks white
C.No two snowflakes are the same D.Polar Bear fur looks clear--just like a snowflake.
高三英语阅读理解中等难度题
Many people enjoy the beauty of the snow. But do you really know the snow? Here are three biggest snow myths that will surprise you.
First of all, it’s a myth that no two snowflakes are the same. In 1988, a scientist found two identical snow crystals that had both formed in a snow storm in Wisconsin, USA. Since then scientists have come to learn that snowflakes can only form into 35 different shapes. Although scientists are also unsure why exactly the various shapes of snowflake form, they have identified eight major shapes, with each of these eight shapes having several different variations.
“Snow is white” is the second biggest myth. It’s actually colorless. Snow is made up of ice particles, and ice is translucent, which means that light does not pass through it easily, but rather it gets reflected. When light hits a snowflake, it gets reflected back from the snowflake’s many surfaces, often bouncing between these surfaces, and because of this that light is reflected back to our eyes as the color white. This is why, up close or magnified, a snowflake always looks clear, yet in reality appears as white.
Lastly, snow doesn’t always appear to us as the color white. Not counting the infamous yellow snow that everyone knows never to eat, you can also get naturally blue snow or even pink snow.
Deep snow can sometimes appear blue in color because the extra layers of snow create a filter for light, which causes more red light to be absorbed by the snow than blue light, meaning that it looks blue.
Likewise, snow can sometimes appear pink in mountainous regions or coastal Polar Regions due to it containing cryophilic fresh-water algae that have a red pigment in them.
As an interesting bonus fact, the fur of Polar Bears is actually made up of translucent fibers, trapping light between its many surfaces and making the Polar Bear look white, when in actuality if you were to examine a single piece of Polar Bear fur up close it would look clear – just like a snowflake.
It’s also a commonly known fact that, if shaved, a Polar Bear would be black in color. The reason a Polar Bear’s skin is black is because black is the color which locks in the most heat.
1.According to the passage, the underlined word “myth” means _________.
A.tale B.riddle
C.mystery D.misunderstanding
2.Why does a snowflake appear as white?
A.Because snow is white.
B.Because snow is made up of ice particles.
C.Because ice is translucent, light does pass through it easily.
D.Because the lights reflect back and forth between the snowflakes’ surfaces.
3.Which of the statement is true?
A.Polar Bears’ black skin can help them keep warm.
B.The color of the snowflakes are white, yellow, blue and pink.
C.Scientists have identified eight minor shapes of the snowflake.
D.The snow absorbs more blue light than red light, making it look blue.
4.Which of the following doesn’t belong to the three biggest snow myths?
A.Snow is white B.Snow always looks white
C.No two snowflakes are the same D.Polar Bear fur looks clear--just like a snowflake.
高三英语阅读理解中等难度题查看答案及解析
-----Do you regret having quit your job?
----Why should I? I ________ as much ,but I really enjoy the present one.
A．didn’t earn B．don’t earn C．hadn’t earned D．haven’t earned
高三英语单项填空中等难度题查看答案及解析
Many people are aware of the beauty of a solar eclipse (日食), but are surprised to learn that lunar eclipses are often just as impressive. While total solar eclipse lasts only for a few minutes and can be seen only in a small area of a few kilometers, total lunar eclipse can last for several hours and can be seen over much of the planet. In fact, the beauty and stability of lunar eclipses make them a favorite of both amateur and professional photographers.
Lunar eclipses generally occur two or three times a year, and are possible only when the Moon is full. When we see the Moon, we are actually seeing sunlight reflected off the surface of the Moon When the Earth is positioned in between the Moon and the Sun, however, the Earth's shadow falls on the Moon, and a lunar eclipse occurs.
The type of lunar eclipse - total, partial, or penumbral (半影) - that occurs depends both on how much of the Moon passes through the Earth's shadow and through which part of the shadow it passes. A penumbral eclipse occurs when the Moon passes through the Earth's outer shadow. This type of eclipse is brief and frequently goes unobserved by all but astronomers. By contrast, total and partial eclipses occur when all or part, respectively, of the Moon passes through the umbra（本影） shadow of the Earth. These eclipses are quite easy to see and are widely observed.
Unlike solar eclipses, lunar eclipses are safe to watch. Solar radiation that occurs during an eclipse of the Sun can cause a form of burns of one's eyes known as eclipse blindness. In fact, the only way to safely view a solar eclipse is by using specially designed equipment. However, since the Moon's light is reflected sunlight, it is completely safe to watch a lunar eclipse without any special equipment, although a pair of binoculars can certainly help the viewer appreciate the beauty of this phenomenon
1.The underlined word "stability " most probably means_______.
A. strength B. position C. steadiness D. visibility
2.According to the passage, a partial lunar eclipse occurs________.
A. when the Moon passes between the Sun and the Earth
B. when all of the Moon passes through the Earth's umbra shadow
C. when only a part of the Moon passes through the Earth's outer shadow
D. when only a part of the Moon passes through the Earth's umbra shadow
3.The passage implies that penumbral eclipses are________.
A. longer-lasting than most solar eclipses
B. more common than partial or full lunar eclipse
C. the result of the shadow cast by the Moon onto the Earth
D. more difficult to observe than other types of lunar eclipse
4.According to the passage, it is safe to watch a lunar eclipse, unlike a solar eclipse, because ________.
A. moonlight is less strong than sunlight
B. a lunar eclipse is briefer than a solar eclipse
C. a lunar eclipse lasts much longer than a solar eclipse
D. special equipment can be employed to view a lunar eclipse
高三英语阅读理解中等难度题查看答案及解析
----Do the boys in your class enjoy playing chess?
---______ likes it, but many of them like football.
A．Nothing B．None C．No one D．Neither
高三英语单项填空简单题查看答案及解析
–What do you think of your visit to the Nature Park?
-- I really enjoyed it. It was ____ than I expected.
A．far more interesting B．so more interesting
C．so more interesting D．most interesting
高三英语单项填空中等难度题查看答案及解析
—What do you think of the concert?
—I really enjoy it. I didn’t expect it was ____ wonderful.
A. as B. more C. most D.very
高三英语单项填空中等难度题查看答案及解析
—What do you think of the concert?
—I really enjoy it. I didn't expect it was ____ wonderful.
A. as B. more C. most D. very
高三英语单项填空中等难度题查看答案及解析
—What do you think of the concert?
—I really enjoy it. I didn’t expect it _________wonderful.
A．most B．more C．that D．very
高三英语单项填空简单题查看答案及解析
Do you sleep well? Some people get off to sleep as soon as the head hits the pillow, but many others are not so lucky．In fact，the lack of quality sleep has become a public health issue around the world．According to the World Association of Sleep Medicine，45 percent of the world’s population suffer from sleep problems．One in eight people don’t sleep well and are easily woken．7．6 percent sleep less than 3 hours each night．Some even can not fall asleep for several days in a row．
As a basic bodily and mental need，sleep is essential for our survival．It helps us to fight diseases，strengthen our memory, perform better in work and school and improve our quality of life．Lack of sleep is known to have a significant negative influence on health，both in the short and long term．Poor sleep has been associated with obesity, weakened immune systems and even some cancers，as well as depression and anxiety．
The World Sleep Day, held on the third Friday of March，is an annual celebration of sleep to lighten the burden of sleep problems through better prevention and management of sleep disorders．
Unhealthy lifestyle may be the first to blame for sleeplessness．More and more people use cellphones and computers in bed，with many staying up until midnight．Modern technology does make our life convenient，but abuse of it ruins our health．Environmental conditions，such as temperature，noise，light，bed comfort also play an important role in one’s ability to get proper sleep．Besides，improper evening diet，like a full or an empty stomach，coffee and alcohol all contribute to sleep problems．Of course，when it comes to causing poor sleep stress from finances，family or work should never be ignored．
However, those who suffer from sleep disorders don’t necessarily have to continue to do so—most sleep problems can be solved．
1.What can be inferred from Paragraph 1 ？
A．Nobody can stay awake for several days．
B．All people are going through sleep problems．
C．Sleep problems have become a worldwide concern．
D．The majority of the world’s population can’t sleep well．
2.What does Paragraph 4 mainly tell us?
A．The influences of lack of sleep．
B．The possible causes of poor sleep．
C．Poor sleep is associated with illness．
D．Good sleep helps us to perform better.
3.What will be discussed in the paragraph that follows?
A．The harm of sleep problems．
B．Activities on the World Sleep Day．
C．Interviews of poor sleep sufferers．
D．Measures against sleep problems．
高三英语阅读理解中等难度题查看答案及解析
Do you sleep well? Some people get off to sleep as soon as the head hits the pillow, but many others are not so lucky．In fact，the lack of quality sleep has become a public health issue around the world．According to the World Association of Sleep Medicine，45 percent of the world’s population suffer from sleep problems．One in eight people don’t sleep well and are easily woken．7．6 percent sleep less than 3 hours each night．Some even can not fall asleep for several days in a row．
As a basic bodily and mental need，sleep is essential for our survival．It helps us to fight diseases，strengthen our memory, perform better in work and school and improve our quality of life．Lack of sleep is known to have a significant negative influence on health，both in the short and long term．Poor sleep has been associated with obesity, weakened immune systems and even some cancers，as well as depression and anxiety．
The World Sleep Day, held on the third Friday of March，is an annual celebration of sleep to lighten the burden of sleep problems through better prevention and management of sleep disorders．
Unhealthy lifestyle may be the first to blame for sleeplessness．More and more people use cellphones and computers in bed，with many staying up until midnight．Modern technology does make our life convenient，but abuse of it ruins our health．Environmental conditions，such as temperature，noise，light，bed comfort also play an important role in one’s ability to get proper sleep．Besides，improper evening diet，like a full or an empty stomach，coffee and alcohol all contribute to sleep problems．Of course，when it comes to causing poor sleep stress from finances，family or work should never be ignored．
However, those who suffer from sleep disorders don’t necessarily have to continue to do so—most sleep problems can be solved．
1.What can be inferred from Paragraph 1 ？
A．Nobody can stay awake for several days．
B．All people are going through sleep problems．
C．Sleep problems have become a worldwide concern．
D．The majority of the world’s population can’t sleep well．
2.What does Paragraph 4 mainly tell us?
A．The influences of lack of sleep．
B．The possible causes of poor sleep．
C．Poor sleep is associated with illness．
D．Good sleep helps us to perform better．
3.What will be discussed in the paragraph that follows?
A．The harm of sleep problems．
B．Activities on the World Sleep Day．
C．Interviews of poor sleep sufferers．
D．Measures against sleep problems．
高三英语阅读理解中等难度题查看答案及解析