All across California, honeybees are flying away from their hives(蜂箱) and dying. Empty hives are causing a lot of worry about some important food crops.
Bees give us a lot more than delicious honey. They are pollinators(授粉者)—they enable plants to produce the fruits and nuts we enjoy by carrying pollen from one plant or flower to the next. The wind pollinates oats, corn, and wheat, but many other plants (like apple and cherry trees and melon vines) depend on insects, bats, and birds. In the U.S., millions and millions of bees kept by human beekeepers fly around doing a lot of this important work for food crops. “Bees are worth protecting because their work adds so much to our diet,” says Dr. Jeff Pettis of the Bee Research Laboratory.
California’s almond (杏仁) crop alone depends on about half the bees in the country. But now the almond crop and many others could be in trouble with so many bees dying.
Researchers at government and university labs all over the country are trying to figure out why so many bees are dying. However, bees are hard to study. Most die away from the hive, so researchers don’t have dead bodies to examine. And when researchers return to a hive after two weeks, about half the bees they studied on their first visit will be dead, replaced by new ones in the natural life cycle of bees. “It isn’t like studying a large animal like a cow that doesn’t move around much and is easy to find out in the cow field,” says Pettis.
Researchers have some ideas about what could be affecting bee health. They could be sick from poisons widely used to kill insects, or they might not be getting enough good food to stay strong. Also, tiny insects called mites feed on bees. “A virus or bacteria could also be doing the killing.” explains Pettis.
1.What is Paragraph 2 mainly about?
A. The wind helps pollinate.
B. Bees are important in food crops.
C. Bees give us a lot of delicious honey.
D. Cherry trees are pollinated by bees.
2.Bees are hard to study because ____________.
A. they move around too much
B. new bees soon replace all the bees studied by researchers
C. they are too tiny
D. they never return to hives
3.What could cause so many bees to die?
A. Poisons to kill birds. B. Eating too much.
C. Large insects. D. Some virus.
4.What can we learn from the article?
A. A large number of bees have died in the hive.
B. Without bees, some foods would disappear from our diet.
C. Only researchers in California want to know what kills bees.
D. Large animals are easier to study than tiny insects.
高三英语阅读理解中等难度题
All across California, honeybees are flying away from their hives(蜂箱) and dying. Empty hives are causing a lot of worry about some important food crops.
Bees give us a lot more than delicious honey. They are pollinators(授粉者)—they enable plants to produce the fruits and nuts we enjoy by carrying pollen from one plant or flower to the next. The wind pollinates oats, corn, and wheat, but many other plants (like apple and cherry trees and melon vines) depend on insects, bats, and birds. In the U.S., millions and millions of bees kept by human beekeepers fly around doing a lot of this important work for food crops. “Bees are worth protecting because their work adds so much to our diet,” says Dr. Jeff Pettis of the Bee Research Laboratory.
California’s almond (杏仁) crop alone depends on about half the bees in the country. But now the almond crop and many others could be in trouble with so many bees dying.
Researchers at government and university labs all over the country are trying to figure out why so many bees are dying. However, bees are hard to study. Most die away from the hive, so researchers don’t have dead bodies to examine. And when researchers return to a hive after two weeks, about half the bees they studied on their first visit will be dead, replaced by new ones in the natural life cycle of bees. “It isn’t like studying a large animal like a cow that doesn’t move around much and is easy to find out in the cow field,” says Pettis.
Researchers have some ideas about what could be affecting bee health. They could be sick from poisons widely used to kill insects, or they might not be getting enough good food to stay strong. Also, tiny insects called mites feed on bees. “A virus or bacteria could also be doing the killing.” explains Pettis.
1.What is Paragraph 2 mainly about?
A. The wind helps pollinate.
B. Bees are important in food crops.
C. Bees give us a lot of delicious honey.
D. Cherry trees are pollinated by bees.
2.Bees are hard to study because ____________.
A. they move around too much
B. new bees soon replace all the bees studied by researchers
C. they are too tiny
D. they never return to hives
3.What could cause so many bees to die?
A. Poisons to kill birds. B. Eating too much.
C. Large insects. D. Some virus.
4.What can we learn from the article?
A. A large number of bees have died in the hive.
B. Without bees, some foods would disappear from our diet.
C. Only researchers in California want to know what kills bees.
D. Large animals are easier to study than tiny insects.
高三英语阅读理解中等难度题查看答案及解析
Up, Up, and Away!
An adventurer who became the first person to fly across the English Channel on a cluster(簇)of balloons has launched a house into the sky just like in the hit movie Up-in reparation for a more ambitious journey and a new record
Fearless Trappe , from North Carolina, stepped into the cartoon themed home before flying above the leon International Balloon Festivel in Mexico more than a week ago.
The 38-year-old Trappe was using the event as a warm-up for his planned trans-Atlantic flight scheduled for next summer ,He aims to complete the 2,500-mile journey in a seven-foot lifeboat carried by 365 huge helium(氦气)ballooms
The brave man is learning to sail a lifeboat ,in case he meeds to ditch (在海中迫降)into the ocean during the danger-filled adventure
He sill fly at between 18,000 feet and 25,000 feet , beating his previous world altitude record of 21,600 feet ,and must fly uninterrupted a distance ten times longer than his previous world record of 230 miles in order to succeed.
The adventurer Trappe ,who holes records for crossing the Alps, flying the most cluster balloons, and the longest distance , has opent his entire carreer ,building up to this ambitious plan.
“I didn’t wake up one day and think:‘I’ going to fly across the Atlantic, ’”he said “he said Every attempt before this was prepared for this fight ,I’ve been training for a long time”
1.The adventurer flew across the English Channel to ________
A.test the balloons
B.launch a house
C.shoot a hit movie
D.prepare for breaking a record
2.To finish the journey ,he will fly a distance of ________
A.2500 miles B.18,000 feet C.25,000 feet D.230 miles
3.About the ambitious journey ,which is NIT mentioned in the passage?
A.When he will fly B.How high he sill fly
C.How far he will fly D.How long it will take him
4.How many world records does Jonathan hold?
A.Two B.Three C.Four D.Five
5.What does he last paragraph imply?
A.Trappe can’t sleep worrying about the adventure
B.Trappe was born to set world records
C.Trappe always keeps his ambition in mind
D.Trappe never thought of crossing the Ataantic before
高三英语阅读理解中等难度题查看答案及解析
阅读理解。
Up,Up,and Away!
An adventurer who became the first person to fly across the English Channel on a cluster of balloons has launched a house into the sky just like in the hit movie Up-in reparation for a more ambitious journey and a new record.
Fearless Trappe,from North Carolina,stepped into the cartoon themed home before flying above the Leon International Balloon Festival in Mexico more than a week ago.
The 38-year-old Trappe was using the event as a warm-up for his planned trans-Atlantic flight scheduled for next summer.He aims to complete the 2,500-mile journey in a seven-foot lifeboat carried by 365 huge helium balloons.
The brave man is learning to sail a lifeboat,in case he needs to ditch into the ocean during the danger-filled adventure.
He still fly at between 18,000 feet and 25,000 feet,beating his previous world altitude record of 21,600 feet,and must fly uninterrupted a distance ten times longer than his previous world record of 230 miles in order to succeed.
The adventurer Trappe,who holds records for crossing the Alps,flying the most cluster balloons,and the longest distance,has spent his entire career,building up to this ambitious plan.
“I didn’t wake up one day and think:‘I’ going to fly across the Atlantic,’”he said.“Every attempt before this was prepared for this fight,I’ve been training for a long time”.
1.The adventurer flew across the English Channel to__________.
A.test the balloons B.launch a house
C.shoot a hit movie D.prepare for breaking a record
2.To finish the journey,he will fly a distance of__________.
A.2500 miles B.18,000 feet
C.25,000 feet D.230 miles
3.About the ambitious journey,which is NOT mentioned in the passage?
A.When he will fly B.How high he sill fly
C.How far he will fly D.How long it will take him
4.How many world records does Jonathan hold?
A.Two B.Three
C.Four D.Five
5.What does he last paragraph imply?
A.Trappe can’t sleep worrying about the adventure
B.Trappe was born to set world records
C.Trappe always keeps his ambition in mind
D.Trappe never thought of crossing the Atlantic before
高三英语阅读理解中等难度题查看答案及解析
The English, as a race, are very different from all other nationalities, including their closest neighbors, the French, Belgians and Dutch. It is claimed (声言) that living on an island 36 from the rest of Europe has much to do with it. Whatever the 37 are, it may be fairly stated that the Englishman has38 many attitudes and habits which make them 39from other nationalities.
Broadly speaking, the Englishman is a 40 , shy and reserved person who is fully relaxed only among people he 41 well. In the 42 of strangers or foreigners he often seems embarrassed. You have only to walk around a city any morning or evening to 43 the truth of this. Serious-looking businessmen and women sit 44 their newspapers or have a light sleep in a corner with no one speaking. 45, to do so would seem most unusual to many foreigners. An Englishman pretending to be giving46to overseas visitors, once suggested, “On entering a railway carriage, shake hands with all the passengers”. Obviously , he was not being 47 . There is an unwritten48clearly understood code (规则) of behaviour which, if 49 , makes the person immediately suspect(怀疑).
In many parts of the world it is quite 50 to show openly their enthusiasm, emotion, excitement, etc. The Englishman is somewhat 51 . Of course, an Englishman lacks no deep feelings, in fact , no less deeply than any other nationality, but he tends to display his52 far less. This is reflected in his use of 53. Imagine a man making a comment on the great 54 of a young girl. A more emotional man might 55 her as “extremely beautiful,” “precious”, however, an Englishman might just say, “Um, she is all right.” The girl who heard this should not be angry because "not bad" and " all right" very often have the same meaning as "first class" " excellent" and this unique style of language use is common in England.
1. A.divided B.separated C.parted D.broke
2. A.problems B.arrangements C.reasons D.differences
3. A.developed B.got C.created D.made
4. A.differ B.separate C.suffer D.vary
5. A.noisy B.rude C.noble D.quiet
6. A.recognizes B.knows C.sees D.likes
7. A.front B.absence C.lack D.presence
8. A.look at B.find out C.tell D.keep
9. A.publishing B.selling C.reading D.showing
10. A.In other words B.On the contrary
C.On the whole D.In fact
11. A.advice B.performances C.speeches D.way
12. A.funny B.great C.serious D.careful
13. A.as well as B.or C.and D.but
14. A.broken B.made C.explained D.followed
15. A.enough B.right C.normal D.impossible
16. A.proud B.kind C.hard D.different
17. A.feelings B.talents C.gifts D.behaviors
18. A.action B.language C.time D.life
19. A.speech B.mark C.beauty D.intelligence
20. A.speak B.describe C.take D.treat
高三英语完型填空中等难度题查看答案及解析
Mosquitoes have an extraordinary ability to target humans far away and fly straight to their unprotected skin. Regrettably,mosquitoes can do more than cause an itchy(发痒的)wound. Some mosquitoes spread several serious diseases,including Dengue,yellow fever and malaria.
Over one million people worldwide die from these diseases each year. New research now shows how mosquitoes choose who to bite.
Mosquitoes need blood to survive. They are attracted to human skin and breath. They smell the carbon dioxide gas,which all mammals breathe out. This gas is the main way for mosquitoes to know that a warm-blooded creature is nearby.
But mosquitoes also use their eyes and sense of touch. Michael Dickinson is a professor at the California Institute of Technology. His research shows how these small insects,with even smaller brains,use three senses to find a blood meal.
Michael Dickinson’s team used plumes—a material that rises into the air of carbon dioxide gas into a wind tunnel. They then used cameras to record the mosquitoes. The insects followed the plume.
Then,the scientists placed dark objects on the lighter colored floor and walls of the tunnel. Mr. Dickinson said,at first,the mosquitoes showed no interest in the objects at all. “What was quite striking and quite surprising is that the mosquitoes fly back and forth for hours. These are hungry females and they completely ignore the objects on the floor and wall of the tunnel. But the moment they get a hit of CO2. they change their behavior quite obviously and now would become attracted to these little visual blobs (斑点).”
This suggested to the researchers that a mosquito’s sense of smell is more important in the search for food. Once mosquitoes catch a smell of a human or animal, they also follow visual signals.
1.What do mosquitoes mainly use to find their targets?
A. Sense of smell. B. Sense of touch.
C. Sense of sight. D. Smart brains.
2.The first response of the mosquitoes to the objects in the experiment is .
A. to fly to the dark ones
B. to catch and stick to them
C. to take no notice of them
D. to attach themselves to them
3.How can we avoid being attacked by mosquitoes according to the text?
A. Don’t let them see us.
B. Use dark objects to stop them.
C. Make them fly back and forth for hours.
D. Attract them to objects full of carbon dioxide gas.
4.What can be the best title for the text?
A. How Do Mosquitoes Survive?
B. Why Do Mosquitoes Need Blood?
C. How Do Mosquitoes Choose to Bite You?
D. Why Do Mosquitoes Attack the Human Being?
高三英语阅读理解中等难度题查看答案及解析
Mosquitoes have an extraordinary ability to target humans far away and fly straight to their unprotected skin. Regrettably,mosquitoes can do more than cause an itchy(发痒的)wound. Some mosquitoes spread several serious diseases,including Dengue,yellow fever and malaria.
Over one million people worldwide die from these diseases each year. New research now shows how mosquitoes choose who to bite.
Mosquitoes need blood to survive. They are attracted to human skin and breath. They smell the carbon dioxide gas,which all mammals breathe out. This gas is the main way for mosquitoes to know that a warm-blooded creature is nearby.
But mosquitoes also use their eyes and sense of touch. Michael Dickinson is a professor at the California Institute of Technology. His research shows how these small insects,with even smaller brains,use three senses to find a blood meal.
Michael Dickinson’s team used plumes—a material that rises into the air of carbon dioxide gas into a wind tunnel. They then used cameras to record the mosquitoes. The insects followed the plume.
Then,the scientists placed dark objects on the lighter colored floor and walls of the tunnel. Mr. Dickinson said,at first,the mosquitoes showed no interest in the objects at all. “What was quite striking and quite surprising is that the mosquitoes fly back and forth for hours. These are hungry females and they completely ignore the objects on the floor and wall of the tunnel. But the moment they get a hit of CO2,they change their behavior quite obviously and now would become attracted to these little visual blobs (斑点).”
This suggested to the researchers that a mosquito’s sense of smell is more important in the search for food. Once mosquitoes catch a smell of a human or animal,they also follow visual signals.
1.What do mosquitoes mainly use to find their targets?
A. Sense of smell. B. Sense of touch.
C. Sense of sight. D. Smart brains.
2.The first response of the mosquitoes to the objects in the experiment is .
A. to fly to the dark ones
B. to catch and stick to them
C. to take no notice of them
D. to attach themselves to them
3.How can we avoid being attacked by mosquitoes according to the text ?
A. Don’t let them see us.
B. Use dark objects to stop them.
C. Make them fly back and forth for hours.
D. Attract them to objects full of carbon dioxide gas.
4. What can be the best title for the text?
A. How Do Mosquitoes Survive?
B. Why Do Mosquitoes Need Blood?
C. How Do Mosquitoes Choose to Bite You?
D. Why Do Mosquitoes Attack the Human Being?
高三英语阅读理解中等难度题查看答案及解析
Mosquitoes have an extraordinary ability to target humans far away and fly straight to their unprotected skin. Regrettably, mosquitoes can do more than cause an itchy(发痒的)wound. Some mosquitoes spread several serious diseases,including Dengue,yellow fever and malaria.
Over one million people worldwide die from these diseases each year. New research now shows how mosquitoes choose who to bite.
Mosquitoes need blood to survive. They are attracted to human skin and breath. They smell the carbon dioxide gas, which all mammals breathe out. This gas is the main way for mosquitoes to know that a warm-blooded creature is nearby.
But mosquitoes also use their eyes and sense of touch. Michael Dickinson is a professor at the California Institute of Technology. His research shows how these small insects, with even smaller brains,use three senses to find a blood meal.
Michael Dickinson’s team used plumes—a material that rises into the air of carbon dioxide gas into a wind tunnel. They then used cameras to record the mosquitoes. The insects followed the plume.
Then, the scientists placed dark objects on the lighter colored floor and walls of the tunnel. Mr. Dickinson said, at first, the mosquitoes showed no interest in the objects at all. “What was quite striking and quite surprising is that the mosquitoes fly back and forth for hours. These are hungry females and they completely ignore the objects on the floor and wall of the tunnel. But the moment they get a hit of CO2, they change their behavior quite obviously and now would become attracted to these little visual blobs (斑点).”
This suggested to the researchers that a mosquito’s sense of smell is more important in the search for food. Once mosquitoes catch a smell of a human or animal,they also follow visual signals.
1.What do mosquitoes mainly use to find their targets?
A. Sense of smell B. Sense of touch
C. Sense of sight D. Smart brains
2.The first response of the mosquitoes to the objects in the experiment is _______.
A. to fly to the dark ones
B. to catch and stick to them
C. to take no notice of them
D. to attach themselves to them
3.How can we avoid being attacked by mosquitoes according to the text?
A. Don’t let them see us.
B. Use dark objects to stop them.
C. Make them fly back and forth for hours.
D. Attract them to objects full of carbon dioxide gas.
4.What can be the best title for the text?
A. How Do Mosquitoes Survive?
B. Why Do Mosquitoes Need Blood?
C. How Do Mosquitoes Choose to Bite You?
D. Why Do Mosquitoes Attack the Human Being?
高三英语阅读理解中等难度题查看答案及解析
Mosquitoes have an extraordinary ability to target humans far away and fly straight to their unprotected skin. Regrettably,mosquitoes can do more than cause an itchy(发痒的)wound. Some mosquitoes spread several serious diseases,including Dengue, yellow fever and malaria.
Over one million people worldwide die from these diseases each year. New research now shows how mosquitoes choose who to bite.
Mosquitoes need blood to survive. They are attracted to human skin and breath. They smell the carbon dioxide gas,which all mammals breathe out. This gas is the main way for mosquitoes to know that a warm-blooded creature is nearby.
But mosquitoes also use their eyes and sense of touch. Michael Dickinson is a professor at the California Institute of Technology. His research shows how these small insects,with even smaller brains,use three senses to find a blood meal.
Michael Dickinson’s team used plumes—a material that rises into the air of carbon dioxide gas into a wind tunnel. They then used cameras to record the mosquitoes. The insects followed the plume.
Then,the scientists placed dark objects on the lighter colored floor and walls of the tunnel. Mr Dickinson said,at first,the mosquitoes showed no interest in the objects at all.
“What was quite striking and quite surprising is that the mosquitoes fly back and forth for hours. These are hungry females and they completely ignore the objects on the floor and wall of the tunnel. But the moment they get a hit of CO2,they change their behavior quite obvi ously and now would become attracted to these little visual blobs (斑点).”
This suggested to the researchers that a mosquito’s sense of smell is more important in the search for food. Once mosquitoes catch a smell of a human or animal,they also follow visual signals.
1.What do mosquitoes mainly use to find their targets?
A. Sense of smell. B. Sense of touch.
C. Sense of sight. D. Smart brains.
2.The first response of the mosquitoes to the objects in the experiment is .
A. to fly to the dark ones
B. to catch and stick to them
C. to take no notice of them
D. to attach themselves to them
3.How can we avoid being attacked by mosqu itoes according to the text ?
A. Don’t let them see us.
B. Use dark objects to stop them.
C. Make them fly back and forth for hours.
D. Attract them to objects full of carbon dioxide gas.
4.What can be the best title for the text?
A. How Do Mosquitoes Survive?
B. Why Do Mosquitoes Need Blood?
C. How Do Mosquitoes Choose to Bite You?
D. Why Do Mosquitoes Attack the Human Being?
高三英语阅读理解中等难度题查看答案及解析
The old couple will never _____ the loss of their son.
A.get over B.get away C.get off D.get across
高三英语单项填空中等难度题查看答案及解析
It's only 4 hours flying time from Sydney, but a world away. What better place to rest than a country where the only place people hurry is on the football field and things are done in "Fiji time"?
Viti Levu is Fiji’s the largest island and here you'll find the capital Suva and the international airport at Nadi Vatoa, on the other hand, is a tiny island in the farthest part of Fiji. Then there are 331 other islands, many of them with places to stay.
With less than a million people living on islands, you'll never feel crowded. And with a climate(气候)that changes only for five degrees between seasons, there’s never a bad time to come. From cities to villages, from mountains to beaches, from water sports to wooden artworks, Fiji can give you more adventures and special experiences than you could find almost any where in the world.
Whenever you come , wherever you go ,you’re sure to see some unforgettable events , from war dances to religious songs, from market days to religious days. It's not just staged for tourists; it's still a part of everyday life in Fiji. And any one of us can enjoy Fiji's spirit by being part of the traditional sharing of yaqona—a drink made from the root of a Fiji plant
So why not join us for the experience of a lifetime?
1.Where is the international airport of Fiji?
A. In Suva B. In Sydney C. On the island of Vatoa D. On the island of Viti Levu
2.What does the text tell us about Fiji people?
A. They invented “Fiji time” for visitors
B. They stick to a traditional way of life
C. They like to travel from place to place
D. They love taking adventures abroad
3. One of the things that make Fiji a tourist attraction is
A. its comfortable hotels
B. its good weather all year round
C. its exciting football matches
D. its religious beliefs
4.Where can we most probably read this text?
A. In a personal diary B. In a science report
C. In a travel magazine D. In a geography textbook
高三英语阅读理解中等难度题查看答案及解析