Studying the DNA of 300 mice has flagged up genes which have been linked to hereditary (遗传的) sight loss for the first time. Researchers say because mice’s genes are so similar to humans’, their findings could lead to the treatment of more genetic diseases.
Scientists at the University of California, Davis studied information from a data bank of mice’s genetic material. They found 347 genes linked to eye problems, with just 86 of them having been studied in the past.
Only around 50 to 75 percent of hereditary eye diseases in human can be explained with present science. The researchers believe these hundreds of new genes found in mice could be a key to explaining-and therefore being able to treat the other 25-50 percent.
“This is extremely valuable for people with hereditary eye disease,” said researcher Professor Ala Moshiri. “All researchers are going to start using these data. In the past, we knew the problem was there but we didn’t know where to look. Now eye centers can call back patients and screen them for these new genes. We expected that more and more of these genetic diseases will be treatable.” Also, the fact is that more than 60 percent of eye problems at birth are ones resulting from the baby’s parents!
Thanks to data from the International Mouse Phenotyping Consortium (IMPC), which is trying to work out what every single gene in a mouse is responsible for, with the aim of translating it to humans, scientists are moving closer to figuring out all genetic causes of blindness. To do this, scientists separate a single gene from other ones at a time and then observe what effect it has on the mouse for a long time. This has so far been done more than 7,000 times and has achieved great success. Researchers are now working alongside eye care centers in Texas and Iowa in order to compare the mice’s genes to those of patients.
1.How many hereditary-sight-loss-related genes were newly found?
A.86. B.261.
C.300. D.347.
2.Why is the percentage of genetic eye problems mentioned in paragraph 3?
A.To show the significance of studying mice’s genes.
B.To prove mice’s genes are similar to humans’.
C.To warn the high risk level of suffering them.
D.To explain how common they are among people.
3.What should scientists do first to unlock secrets of genetic blindness?
A.Compare humans’ genes with mice’s.
B.Recognize each gene’s role of humans.
C.Set apart a gene of a mouse each time.
D.Figure out each gene’s function of a mouse.
4.What can be a suitable title for the text?
A.New Ways to Cure Sight Loss
B.Genes Found Behind Eye Problems
C.Genetic Diseases Discovered in Mice
D.Humans Genes Causing Eye Diseases
高三英语阅读理解中等难度题
Studying the DNA of 300 mice has flagged up genes which have been linked to hereditary (遗传的) sight loss for the first time. Researchers say because mice’s genes are so similar to humans’, their findings could lead to the treatment of more genetic diseases.
Scientists at the University of California, Davis studied information from a data bank of mice’s genetic material. They found 347 genes linked to eye problems, with just 86 of them having been studied in the past.
Only around 50 to 75 percent of hereditary eye diseases in human can be explained with present science. The researchers believe these hundreds of new genes found in mice could be a key to explaining-and therefore being able to treat the other 25-50 percent.
“This is extremely valuable for people with hereditary eye disease,” said researcher Professor Ala Moshiri. “All researchers are going to start using these data. In the past, we knew the problem was there but we didn’t know where to look. Now eye centers can call back patients and screen them for these new genes. We expected that more and more of these genetic diseases will be treatable.” Also, the fact is that more than 60 percent of eye problems at birth are ones resulting from the baby’s parents!
Thanks to data from the International Mouse Phenotyping Consortium (IMPC), which is trying to work out what every single gene in a mouse is responsible for, with the aim of translating it to humans, scientists are moving closer to figuring out all genetic causes of blindness. To do this, scientists separate a single gene from other ones at a time and then observe what effect it has on the mouse for a long time. This has so far been done more than 7,000 times and has achieved great success. Researchers are now working alongside eye care centers in Texas and Iowa in order to compare the mice’s genes to those of patients.
1.How many hereditary-sight-loss-related genes were newly found?
A.86. B.261.
C.300. D.347.
2.Why is the percentage of genetic eye problems mentioned in paragraph 3?
A.To show the significance of studying mice’s genes.
B.To prove mice’s genes are similar to humans’.
C.To warn the high risk level of suffering them.
D.To explain how common they are among people.
3.What should scientists do first to unlock secrets of genetic blindness?
A.Compare humans’ genes with mice’s.
B.Recognize each gene’s role of humans.
C.Set apart a gene of a mouse each time.
D.Figure out each gene’s function of a mouse.
4.What can be a suitable title for the text?
A.New Ways to Cure Sight Loss
B.Genes Found Behind Eye Problems
C.Genetic Diseases Discovered in Mice
D.Humans Genes Causing Eye Diseases
高三英语阅读理解中等难度题查看答案及解析
Studying the DNA of 300 mice has flagged up genes which have been linked to hereditary (遗传的) sight loss for the first time. Researchers say because mice’s genes are so similar to humans’, their findings could lead to the treatment of more genetic diseases.
Scientists at the University of California, Davis studied information from a data bank of mice’s genetic material. They found 347 genes linked to eye problems, with just 86 of them having been studied in the past.
Only around 50 to 75 percent of hereditary eye diseases in human can be explained with present science. The researchers believe these hundreds of new genes found in mice could be a key to explaining-and therefore being able to treat the other 25-50 percent.
“This is extremely valuable for people with hereditary eye disease,” said researcher Professor Ala Moshiri. “All researchers are going to start using these data. In the past, we knew the problem was there but we didn’t know where to look. Now eye centers can call back patients and screen them for these new genes. We expected that more and more of these genetic diseases will be treatable.” Also, the fact is that more than 60 percent of eye problems at birth are ones resulting from the baby’s parents!
Thanks to data from the International Mouse Phenotyping Consortium (IMPC), which is trying to work out what every single gene in a mouse is responsible for, with the aim of translating it to humans, scientists are moving closer to figuring out all genetic causes of blindness. To do this, scientists separate a single gene from other ones at a time and then observe what effect it has on the mouse for a long time. This has so far been done more than 7,000 times and has achieved great success. Researchers are now working alongside eye care centers in Texas and Iowa in order to compare the mice’s genes to those of patients.
1.How many hereditary-sight-loss-related genes were newly found?
A. 86. B. 261.
C. 300. D. 347.
2.Why is the percentage of genetic eye problems mentioned in paragraph 3?
A. To show the significance of studying mice’s genes.
B. To prove mice’s genes are similar to humans’.
C. To warn the high risk level of suffering them.
D. To explain how common they are among people.
3.What should scientists do first to unlock secrets of genetic blindness?
A. Compare humans’ genes with mice’s.
B. Recognize each gene’s role of humans.
C. Set apart a gene of a mouse each time.
D. Figure out each gene’s function of a mouse.
4.What can be a suitable title for the text?
A. New Ways to Cure Sight Loss
B. Genes Found Behind Eye Problems
C. Genetic Diseases Discovered in Mice
D. Humans Genes Causing Eye Diseases
高三英语阅读理解中等难度题查看答案及解析
The Voice of China has set up a stage some people can achieve their dreams．
A．which B．where C．that D．when
高三英语单项填空简单题查看答案及解析
The Voice of China has set up a stage____ some people can realize their dreams.
A. which B. where C. that D. when
高三英语单项填空中等难度题查看答案及解析
The Voice of China has set up a stage _______ some people can achieve their dreams.
A. which B. when C. that D. where
高三英语单项填空中等难度题查看答案及解析
The professor ________at 8 o’clock，but he has not shown up yet，which worries all of us.
A．was supposed to arrive B．must have arrived
C．might have arrived D．was supposed arriving
高三英语单项填空中等难度题查看答案及解析
The rapid growth in skyscrapers worldwide, most of which have large windows, has led to a high demand for window washers. Though the job is well-paid, it is dangerous and accidents are not uncommon. However, if Israel-based start-up Skyline Technologies has its way, the dangerous job may soon be done by Ozmo, an intelligent window cleaning robot, with humans supervising (监督) from the safety of the ground.
Much like humans, Ozmo, sitting on platforms hanging from the buildings, uses its arms and brushes to clean the dirt on the glass. A 3D map of the building’s surface programmed into its system allows the robot to skillfully deal with any obstacle it is likely to meet, as it moves up and down the buildings. The robot will self-correct and move around every obstacle that it might have met so as not to break a window.
Unlike present window washers, the robot cleaner does not require soap to clean the glass. Instead, it uses distilled (蒸馏的) water to do the job. Yaron Schwarcz, CEO of Skyline Robotics explains, “We are environmentally friendly.”
Ozmo is also expected to be much more efficient than its human counterparts. While it presently takes three cleaners 480 hours each to clean windows of a 40-storey glass building, the robot will be able to do it in 80 hours. However, unlike other robots, Ozmo will not replace human workers, and only make their jobs safer by making them supervisors, who will be controlling the operation from the safety of the ground.
Whether Ozmo, which is still being tested, does as good a job as humans remains to be seen. If things go well, its creators have much bigger ambitions for Ozmo. Schwarcz told Forbes Magazine, “Window cleaning is just the tip of the iceberg. We plan to replace all tasks that are dangerous and dirty.”
1.Why is Ozmo friendly to our environment?
A.It uses less soap than other robots.
B.It depends on solar energy.
C.It makes our ecosystem more balanced.
D.It consumes nothing made from chemicals.
2.What can we infer from the passage?
A.Like cleaning windows, a well-paid job is usually dangerous.
B.Without humans supervising, Ozmo could have performed better.
C.Ozmo can save 400 hours per building compared to a human cleaner.
D.Ozmo can’t be stopped by obstacles with its advanced system.
3.What does the underlined part “the tip of the iceberg” mean?
A.A small part of a big plan.
B.As cool as the iceberg.
C.The most advanced technology.
D.The leading role in the modern world.
4.What is the best title for the text？
A.Robots make a difference.
B.Meet Ozmo, the window cleaning robot.
C.Supervise Ozmo, human safe.
D.Intelligent Ozmo becomes known worldwide.
高三英语阅读理解中等难度题查看答案及解析
—The development of gene-editing has released huge innovation potential.
—But if used illegally, such a promising technology could become ____.
A.a Pandora’s box B.a dark horse C.a child's play D.a Herculean task
高三英语单项填空简单题查看答案及解析
As a result of the terrible snowstorm, the highway has been closed up, so you have to wait for further ________.
A. introduction B. attention C. notice D. advice
高三英语单项填空中等难度题查看答案及解析
As a result of the terrible snowstorm, the highway has been closed up, so you have to wait for further ________.
A. introduction B. attention C. notice D. advice
高三英语单项填空中等难度题查看答案及解析