The Cuban iguana(大蜥蜴) is a species of lizard(蜥蜴) of the iguana family. It is the largest of the West Indian rock iguanas, one of the most endangered groups of lizards. This species with red eyes and a thick tail is one of the largest lizards in the Caribbean.
The Cuban iguana is primarily herbivorous; 95% of its diet consists of the leaves, flowers and fruits from as many as 30 plant species, including the seaside rock bush and various grasses. However, Cuban iguanas occasionally consume animal matter, and individuals have been observed eating the dead flesh of birds, fish and crabs, The researchers wrote that quite a few people on Isla Magueyes could have caused this incident.
The Cuban iguana is distributed throughout the rocky southern coastal areas of mainland Cuba and its surrounding islands with a wild population booming on Isla Magueyes, Puerto Rico. It is also found on the Cayman Islands of Little Cayman and Cayman Brac, where a separate subspecies occurs. Females guard their nest sites and often nest in sites half destroyed by Cuban crocodiles. To avoid the attack from them, the Cuban iguana often makes its home within or near prickly-pear cacti (仙人掌).
In general the species is in decline, more quickly on the mainland than on the outlying islands. One of the reasons for their decline is habitat destruction caused by the over consuming of farm animals, housing development, and the building of tourist resorts on the beaches where the animals prefer to build their nests. Although the wild population is in decline, the numbers of iguanas have been sharply increased as a result of captive-breeding(圈养) and other conservation programs.
1.The underlined word "herbivorous" (Paragraph 2) probably means .
A. dangerous B. gentle
C.flesh-eating D. plant-eating
2.Why does the Cuban iguana build its nest near prickly-pear cacti?
A. To keep itself cool.
B. To avoid crocodiles' attack.
C. To stay away from people.
D.To get the food easily.
3.How many reasons are mentioned for the habitat destruction?
A. Two. B.Five. C. Four. D. Three.
4.What's the author's purpose of writing the text?
A. To give us a brief introduction to the Cuban iguana.
B. To show he is concerned about the Cuban iguana.
C. To explain reasons for the Cuban iguana's decline.
D. To draw people's attention to the endangered Cuban iguana.
高三英语阅读理解中等难度题
The Cuban iguana(大蜥蜴) is a species of lizard(蜥蜴) of the iguana family. It is the largest of the West Indian rock iguanas, one of the most endangered groups of lizards. This species with red eyes and a thick tail is one of the largest lizards in the Caribbean.
The Cuban iguana is primarily herbivorous; 95% of its diet consists of the leaves, flowers and fruits from as many as 30 plant species, including the seaside rock bush and various grasses.However, Cuban iguanas occasionally consume animal matter, and individuals have been observed eating the dead flesh of birds, fish and crabs, The researchers wrote that quite a few people on Isla Magueyes could have caused this incident.
The Cuban iguana is distributed throughout the rocky southern coastal areas of mainland Cuba and its surrounding islands with a wild population booming on Isla Magueyes, Puerto Rico. It is also found on the Cayman Islands of Little Cayman and Cayman Brac, where a separate subspecies occurs. Females guard their nest sites and often nest in sites half destroyed by Cuban crocodiles. To avoid the attack from them, the Cuban iguana often makes its home within or near prickly-pear cacti (仙人掌).
In general the species is in decline, more quickly on the mainland than on the outlying islands. One of the reasons for their decline is habitat destruction caused by the over consuming of farm animals, housing development, and the building of tourist resorts on the beaches where the animals prefer to build their nests. Although the wild population is in decline, the numbers of iguanas have been sharply increased as a result of captive-breeding(圈养) and other conservation programs.
1.The underlined word "herbivorous" (Paragraph 2) probably means .
A. dangerous B. gentle
C.flesh-eating D. plant-eating
2.Why does the Cuban iguana build its nest near prickly-pear cacti?
A. To keep itself cool.
B. To avoid crocodiles' attack.
C. To stay away from people.
D.To get the food easily.
3.How many reasons are mentioned for the habitat destruction?
A. Two. B.Five. C. Four. D. Three.
4.What's the author's purpose of writing the text?
A. To give us a brief introduction to the Cuban iguana.
B. To show he is concerned about the Cuban iguana.
C. To explain reasons for the Cuban iguana's decline.
D. To draw people's attention to the endangered Cuban iguana.
高三英语阅读理解中等难度题查看答案及解析
The Cuban iguana(大蜥蜴) is a species of lizard(蜥蜴) of the iguana family. It is the largest of the West Indian rock iguanas, one of the most endangered groups of lizards. This species with red eyes and a thick tail is one of the largest lizards in the Caribbean.
The Cuban iguana is primarily herbivorous; 95% of its diet consists of the leaves, flowers and fruits from as many as 30 plant species, including the seaside rock bush and various grasses. However, Cuban iguanas occasionally consume animal matter, and individuals have been observed eating the dead flesh of birds, fish and crabs, The researchers wrote that quite a few people on Isla Magueyes could have caused this incident.
The Cuban iguana is distributed throughout the rocky southern coastal areas of mainland Cuba and its surrounding islands with a wild population booming on Isla Magueyes, Puerto Rico. It is also found on the Cayman Islands of Little Cayman and Cayman Brac, where a separate subspecies occurs. Females guard their nest sites and often nest in sites half destroyed by Cuban crocodiles. To avoid the attack from them, the Cuban iguana often makes its home within or near prickly-pear cacti (仙人掌).
In general the species is in decline, more quickly on the mainland than on the outlying islands. One of the reasons for their decline is habitat destruction caused by the over consuming of farm animals, housing development, and the building of tourist resorts on the beaches where the animals prefer to build their nests. Although the wild population is in decline, the numbers of iguanas have been sharply increased as a result of captive-breeding(圈养) and other conservation programs.
1.The underlined word "herbivorous" (Paragraph 2) probably means .
A. dangerous B. gentle
C.flesh-eating D. plant-eating
2.Why does the Cuban iguana build its nest near prickly-pear cacti?
A. To keep itself cool.
B. To avoid crocodiles' attack.
C. To stay away from people.
D.To get the food easily.
3.How many reasons are mentioned for the habitat destruction?
A. Two. B.Five. C. Four. D. Three.
4.What's the author's purpose of writing the text?
A. To give us a brief introduction to the Cuban iguana.
B. To show he is concerned about the Cuban iguana.
C. To explain reasons for the Cuban iguana's decline.
D. To draw people's attention to the endangered Cuban iguana.
高三英语阅读理解中等难度题查看答案及解析
The Cuban iguana is a species of lizard(蜥蜴) of the iguana family. It is the largest of the West Indian rock iguanas, one of the most endangered groups of lizards. This species with red eyes and a thick tail is one of the largest lizards in the Caribbean.
The Cuban iguana is primarily herbivorous; 95% of its diet consists of the leaves, flowers and fruits from as many as 30 plant species, including the seaside rock bush and various grasses. However, Cuban iguanas occasionally consume animal matter, and individuals have been observed eating the dead flesh of birds, fish and crabs, The researchers wrote that quite a few people on Isla Magueyes could have caused this incident.
The Cuban iguana is distributed throughout the rocky southern coastal areas of mainland Cuba and its surrounding islands with a wild population booming on Isla Magueyes, Puerto Rico. It is also found on the Cayman Islands of Little Cayman and Cayman Brac, where a separate subspecies occurs. Females guard their nest sites and often nest in sites half destroyed by Cuban crocodiles. To avoid the attack from them, the Cuban iguana often makes its home within or near prickly-pear cacti (仙人掌).
In general the species is in decline, more quickly on the mainland than on the outlying islands. One of the reasons for their decline is habitat destruction caused by the over consuming of farm animals, housing development, and the building of tourist resorts on the beaches where the animals prefer to build their nests. Although the wild population is in decline, the numbers of iguanas have been sharply increased as a result of captive-breeding(圈养) and other conservation programs.
1..The underlined word "herbivorous" (Paragraph 2) probably means .
A. dangerous B. gentle
C. plant-eating D. flesh-eating
2..Why does the Cuban iguana build its nest near prickly-pear cacti?
A. To keep itself cool. B. To get the food easily.
C. To stay away from people. D. To avoid crocodiles' attack.
3..How many reasons are mentioned for the habitat destruction?
A. Two. B. Three. C. Four. D. Five.
4..What's the author's purpose of writing the text?
A. To give us a brief introduction to the Cuban iguana.
B. To show he is concerned about the Cuban iguana.
C. To explain reasons for the Cuban iguana's decline.
D. To draw people's attention to the endangered Cuban iguana.
高三英语阅读理解中等难度题查看答案及解析
The Cuban iguana is a species of lizard(蜥蜴) of the iguana family. It is the largest of the West Indian rock iguanas, one of the most endangered groups of lizards. This species with red eyes and a thick tail is one of the largest lizards in the Caribbean.
The Cuban iguana is primarily herbivorous; 95% of its diet consists of the leaves, flowers and fruits from as many as 30 plant species, including the seaside rock bush and various grasses. However, Cuban iguanas occasionally consume animal matter, and individuals have been observed eating the dead flesh of birds, fish and crabs. The researchers wrote that quite a few people on Isla Magueyes could have caused this incident.
The Cuban iguana is distributed throughout the rocky southern coastal areas of mainland Cuba and its surrounding islands with a wild population booming on Isla Magueyes, Puerto Rico. It is also found on the Cayman Islands of Little Cayman and Cayman Brac, where a separate subspecies occurs. Females guard their nest sites and often nest in sites half destroyed by Cuban crocodiles. To avoid the attack from them, the Cuban iguana often makes its home within or near prickly-pear cacti(仙人掌).
In general the species is in decline, more quickly on the mainland than on the outlying islands. One of the reasons for their decline is habitat destruction caused by the over consuming of farm animals, housing development, and the building of tourist resorts on the beaches where the animals prefer to build their nests. Although the wild population is in decline, the numbers of iguanas have been sharply increased as a result of captive-breeding(圈养)and other conservation programs.
1.The underlined word "herbivorous" (Paragraph 2) probably means .
A. dangerous B. gentle
C. plant-eating D. flesh-eating
2.Why does the Cuban iguana build its nest near prickly-pear cacti?
A. To keep itself cool.
B. To get the food easily.
C. To stay away from people.
D. To avoid crocodiles' attack.
3.How many reasons are mentioned for the habitat destruction?
A. Two. B. Three. C. Four. D. Five.
4.What's the author's purpose of writing the text?
A. To give us a brief introduction to the Cuban iguana.
B. To show he is concerned about the Cuban iguana.
C. To explain reasons for the Cuban iguana's decline.
D. To draw people's attention to the endangered Cuban iguana.
高三英语阅读理解中等难度题查看答案及解析
阅读理解。
The Cuban iguana is a species of lizard(蜥蜴) of the iguana family. It is the largest of the West Indian rock iguanas, one of the most endangered groups of lizards. This species with red eyes and a thick tail is one of the largest lizards in the Caribbean.
The Cuban iguana is primarily herbivorous; 95% of its diet consists of the leaves, flowers and fruits from as many as 30 plant species, including the seaside rock bush and various grasses. However, Cuban iguanas occasionally consume animal matter, and individuals have been observed eating the dead flesh of birds, fish and crabs. The researchers wrote that quite a few people on Isla Magueyes could have caused this incident.
The Cuban iguana is distributed throughout the rocky southern coastal areas of mainland Cuba and its surrounding islands with a wild population booming on Isla Magueyes, Puerto Rico. It is also found on the Cayman Islands of Little Cayman and Cayman Brac, where a separate subspecies occurs. Females guard their nest sites and often nest in sites half destroyed by Cuban crocodiles. To avoid the attack from them, the Cuban iguana often makes its home within or near prickly-pear cacti(仙人掌).
In general the species is in decline, more quickly on the mainland than on the outlying islands. One of the reasons for their decline is habitat destruction caused by the over consuming of farm animals, housing development, and the building of tourist resorts on the beaches where the animals prefer to build their nests. Although the wild population is in decline, the numbers of iguanas have been sharply increased as a result of captive-breeding(圈养)and other conservation programs.
【题文1】The underlined word "herbivorous" (Paragraph 2) probably means .
A. dangerous B. gentle
C. plant-eating D. flesh-eating
1.Why does the Cuban iguana build its nest near prickly-pear cacti?
A. To keep itself cool. B. To get the food easily.
C. To stay away from people. D. To avoid crocodiles' attack.
2.How many reasons are mentioned for the habitat destruction?
A. Two. B. Three.
C. Four. D. Five.
3.What's the author's purpose of writing the text?
A. To give us a brief introduction to the Cuban iguana.
B. To show he is concerned about the Cuban iguana.
C. To explain reasons for the Cuban iguana's decline.
D. To draw people's attention to the endangered Cuban iguana.
高三英语阅读理解中等难度题查看答案及解析
Scientists have long puzzled over how iguanas, a group of lizards(蜥蜴) mostly found in the Americas, came to live in the isolated Pacific islands of Fiji and Tonga. Some scientists used to suppose that they must have traveled there on a raft, a journey of around 5,000 miles from South America to the islands. There are documented cases of iguanas reaching remote Caribbean islands and the Galapagos Islands on floating logs. But new research in January by Brice Noonan and Jack Sites suggested that iguanas may have simply walked to Fiji and Tonga when the islands were still a part of an ancient southern supercontinent.
The ancient supercontinent was made up of present-day Africa, Australia, Antarctica and parts of Asia. If that’s the case, the island species would need to be very old. Using “molecular (分子) clock” analysis of living iguanas’ DNA, Noonan and Sites found that, sure enough, the lineage of iguanas has been around for more than 60 million years—easily old enough to have been in the area when the islands were still connected by land bridges to Asia or Australia.
Fossils (化石) uncovered in Mongolia suggest that iguanid ancestors did once live in Asia. Though there’s currently no fossil evidence of iguanas in Australia, that doesn’t necessarily mean they were never there. “The fossil record of this continent is surprisingly poor and cannot be taken as evidence of true absence,” the authors write.
So if the iguanas simply walked to Fiji and Tonga from Asia or possibly Australia, why are they not also found on the rest of the Pacific islands? Noonan and Sites say fossil evidence suggests that iguana species did once inhabit other islands, but went extinct right around the time when humans settled in those islands. But Fiji and Tonga have a much shorter history of human presence, which may have helped the iguanas living there to escape extinction.
The researchers say that their study can’t completely rule out the rafting theory, but it does make the land bridge theory “far more reasonable than previously thought.”
1. What did some scientists previously believe about the iguanas?
A. They were once discovered in America.
B. They traveled by raft to Fiji and Tonga.
C. They could survive in poor living conditions.
D. They moved to Fiji and Tonga from Australia.
2.According to Noonan and Sites, 60 million years ago ____.
A. the land of the world was a supercontinent
B. Fiji and Tonga were connected to Asia or Australia
C. Africa, Australia and America were a continent
D. iguanas walked to Fiji and Tonga from Africa
3.The underline word “lineage” in Paragraph 2 probably refers to ____.
A. conditions in which creatures can survive
B. the change in ancient plants and animals.
C. the line of generations of an ancestor
D. the habitat of a type of an ancient animal
4. What is the main topic of this passage?
A. The life span of animals living on the ancient supercontinent.
B. The two islands being home to several iguana species in the Pacific region.
C. The fossil evidence suggesting iguanas’ ancestors’ swimming to Fiji and Tonga
D. By raft or by land — how did iguanas reach the tiny Pacific islands?
高三英语阅读理解中等难度题查看答案及解析
It is not the strongest of the species that survives, nor the most intelligent that survives. It is________ ______ that is most adaptable to change.
A. one B. that C. the one D. this
高三英语单项填空中等难度题查看答案及解析
On the island of New Zealand, there is a grasshopper-like species of insect that is found nowhere else on earth. New Zealanders have given it the nickname weta, which is a native Maori word meaning “god of bad looks”. It’s easy to see why anyone would call this insect a bad-looking bug. Most people feel disgusted at the sight of these bulky(笨重的),slow-moving creatures.
Wetas are natural creatures; they come out of their caves and holes only after dark. A gaint weta can grow to over three inches long and weigh as much as 1.5 ounces. Giant wetas can hop up to two feet at a time. Some of them live in trees, and others live in caves. They are very long-lived for insects, and some adult wetas can live as long as two years. Just like their cousins grasshoppers and crickets, wetas are able to “sing” by rubbing their leg parts together, or against their lower bodies.
Most people probably don’t feel sympathy for these endangered creatures, but they do need protecting. The slow and clumsy wetas have been around on the island since the times of the dinosaurs, and have evolved and survived in an environment where they had no enemies until rats came to the island with European immigrants. Since rats love to hunt and eat wetas, the rat population on the island has grown into a real problem for many of the native species that are unaccustomed to its presence, and poses a serious threat to the native weta population.
1..According to the passage, which of the following statements is TRUE?
The weta is a newly discovered insect species.
The Maoris nicknamed themselves “Wetas”.
The Europeans brought wetas to New Zealand.
Wetas are unpleasant to the eye.
2..The strange thing about wetas is that they can produce pleasant sounds by ________.
A. rubbing their body parts
B. moving slowly on the ground
C. hopping up to two feel at a time
D. coming out only at night
3.Which of the following descriptions of wetas is accurate?
A. They are quick in movement.
B. They are decreasing in number.
C. They are very active in the daytime.
D. They have a short lifespan for insects.
4.The underlined word “its” in the last paragraph is the closest in meaning to “_________”.
A. The dinosaur’s B. The weta’s C. The island’s D. The rat’s
5.From which of the following is the passage LEAST likely to be taken?
A. A science magazine. B. A travel guide.
C. A business journal. D. biology textbook.
高三英语阅读理解中等难度题查看答案及解析
On the island of New Zealand, there is a grasshopper-like species of insect that is found nowhere else on earth. New Zealanders have given it the nickname weta, which is a native Maori word meaning “god of bad looks”. It’s easy to see why anyone would call this insect a bad-looking bug. Most people feel disgusted at the sight of these bulky(笨重的),slow-moving creatures.
Wetas are natural creatures; they come out of their caves and holes only after dark. A giant weta can grow to over three inches long and weigh as much as 1.5 ounces. Giant wetas can hop up to two feet at a time. Some of them live in trees, and others live in caves. They are very long-lived for insects, and some adult wetas can live as long as two years. Just like their cousins grasshoppers and crickets, wetas are able to “sing” by rubbing their leg parts together, or against their lower bodies.
Most people probably don’t feel sympathy for these endangered creatures, but they do need protecting. The slow and clumsy wetas have been around on the island since the times of the dinosaurs, and have evolved and survived in an environment where they had no enemies until rats came to the island with European immigrants. Since rats love to hunt and eat wetas, the rat population on the island has grown into a real problem for many of the native species that are unaccustomed to its presence, and poses a serious threat to the native weta population.
1..According to the passage, which of the following statements is TRUE?
The weta is a newly discovered insect species.
The Maoris nicknamed themselves “Wetas”.
The Europeans brought wetas to New Zealand.
Wetas are unpleasant to the eye.
2..The strange thing about wetas is that they can produce pleasant sounds by ________.
A. rubbing their body parts
B. moving slowly on the ground
C. hopping up to two feel at a time
D. coming out only at night
3.Which of the following descriptions of wetas is accurate?
A. They are quick in movement.
B. They are decreasing in number.
C. They are very active in the daytime.
D. They have a short lifespan for insects.
4.The underlined word “its” in the last paragraph is the closest in meaning to “_________”.
A. The dinosaur’s B. The weta’s
C. The island’s D. The rat’s
5.From which of the following is the passage LEAST likely to be taken?
A. A science magazine. B. A travel guide.
C. A business journal. D. biology textbook.
高三英语阅读理解中等难度题查看答案及解析
Natural selection is the process by which one type of animal within a species thrives because of certain characteristics that make it more likely to live than others in its group. The history of the peppered moth(灰蛾)is an example of the natural selection process.
In 19th century England, certain types of peppered moths were able to better blend(融合)into their surroundings. During that time period, great changes were happening in Great Britain. The Industrial Revolution was part of this change, and with it came air pollution. Natural selection often takes hundred or even thousands of years to occur. For the peppered moth, this process occurred comparatively quickly.
At the beginning of the Industrial Age, most peppered moths in England were light-colored and covered with black markings, although a few moths had dark-colored wings. Because the light-colored moths blended into the light-colored bark on the trees, they could not be easily seen by birds that would eat them. As the air grew more polluted, however, tree trunks became covered with soot(烟煤)and became darker. The light-colored moths became easy for birds to see against the dark tree trunks. Since the dark-colored moths now had the advantage, their numbers grew. Within 50 years, the peppered moth went from being mostly light-colored to being mostly dark-colored.
In the 20th century, the air cleared up, and the peppered moth population changed again. As tree trunks lighted due to less soot in the air, light-colored moths once again had an advantage. Their numbers increased as soot levels declined. Depending on their environment, the coloration of the moths helped them to be “naturally selected” to survive.
1.In 19th century, what was one of the causes of great changes in Great Britain?
A.The surroundings. B.The Industrial Revolution.
C.The natural selection. D.The peppered moth.
2.What can we infer about the peppered moth’s natural selection process?
A.The length of time was unusual.
B.The soot levels in England did not affect it.
C.The color of peppered moths changed at random.
D.It was a good example of environmental protection.
3.What’s the difference between light-colored and dark-colored moths?
A.Dark-colored moths were originally easy to see on trees.
B.Both kinds of moths preferred the dark-colored trees.
C.Birds failed to see light-colored moths.
D.The color of moths was unimportant.
4.Which would most likely happen if soot darkened England’s trees again?
A.Birds would eat fewer moths.
B.Moths would not be able to stay alive.
C.Light-colored moths would disturb people’s life.
D.The population of dark-colored moths would increase.
高三英语阅读理解中等难度题查看答案及解析