网址：http://m.1010jiajiao.com/timu3_id_3010670[举报]
C
Reading about history is nice, but finding ties to long-ago historical events in your own backyard is really exciting．
In their heavily populated area, neighbors Adam Giles,13, and Derek Hann．12, uncovered pieces of glass that looked quite different from what’s used today．“After digging about two feet down, I came across an interesting bottle,” Derek said．The bottle had a “pontil scar” on the bottle, an indication that it was hand-blown rather than machine made．It also had the name “Fraser” on one side．
Adam found remains of a green bottle and some very thick brown glass—again, far different from today’s．
After doing research on the computer, the boys contacted Aimee Wells of the county’s Cultural Resources office．She showed them a computer program that digitally puts old maps over modern satellite photographs．
Bingo! Their back yards were once part of a military（军事的） encampment（营地） called Camp Alger used by Ohio soldiers on their way to fight in the Spanish-American War in 1898．
So how do a few bottles get connected to a brief war that was more than a century ago? “We get there by good judgment,” Wells said．“We know the time period of the bottles and what happened in that area．” Anyone can dig a hole, but archaeologists seek a deeper understanding．How do objects found relate to things around them?
When Derek and Adam realized that a solider might have held that Fraser bottle 110 years ago, they wondered what he might have been thinking．What did he see as he looked around him? How did he pass the time waiting to go into battle?
Historical records show that while waiting for orders, the soldiers in and around Camp Alger played baseball, played instruments and walked seven miles to the Potomac River once a week for baths．A spread of strange fever forced the closing of the camp, and there are no buildings to study．“What’s left is only what’s in the ground,” said Wells．
Derek’s and Adam’s back yards have joined the 3,400 places listed on the county’s register of archaeological sites．The boys were given tips on how to dig effectively and safely, and on how to document the location of items found．
The official record of their finds serves as another piece of the puzzle for historians seeking to form a more complete story of what happened．
“Not everyone is going to have historical objects in their own yard,” Wells said．“That’s okay．Make your own time capsule and bury it．What would you want people to know about your life years from now?”
63．What is the passage mainly about?
A．How Adam Giles and Derek Hann dug out the remains of an ancient military encampment．
B．What Adam Giles and Derek Hann found in their back yard and its relationship with an encampment．
C．The great contribution Adam Giles and Derek Hann made to the cause of archaeology．
D．The tips on how to dig out ancient objects buried under the ground safely and effectively．
64．From the passage, we can see that the boy’s discovery _______．
A．includes all kinds of hand-made and machine- made glass．
B．has helped historians find out what happened in 1898．
C．couldn’t have been meaningful without Aimee Wells’ help．
D．has added the county to the list of archaeologist sites．
65．When Wells said “We get there by good judgment．” （Paragraph 6）, she meant that_______．
A．they have established the ties to Camp Alger by finding out the time period of the bottles．
B．they have figured out how to get to the place where the brief war happened．
C．they have managed to dig out the bottles in the back yard safely with common sense．
D．they were able to locate the soldiers who used the Fraser bottles 110 years ago．
66．Which of the following fits the description of historical records?
A．The soldiers in and around Camp Alger delighted in playing basketball in their spare time．
B．When Camp Alger was forced to close, all the buildings there were destroyed．
C．The soldiers in and around Camp Alger often buried some bottles underground as time capsules．
D．Camp Alger was forced to close because of a spread of a strange fever．
A woman wears a face mask to protect her from polluted air in Lanzhou, China, in December．
A new study showed air pollution might put people more at risk for heart disease than scientists had thought．Kristin Miller, a doctoral student at the University of Washington, said chances of getting the disease were related to not only which city a woman lived in, but also where in the city．The study found that the effects of air pollution were often larger within cities than between cities．
The new findings make experts suspect that current pollution limits may be inadequate．Scientists examined rates of heart attack, stroke （中风） and other cardiovascular （心脏血管的） events in women with long-term exposure to air pollution．
The study involved women over the age of fifty who had no sign of cardiovascular disease at the start of the research．The study followed the women for as long as nine years to see how they would develop cardiovascular problems．
The researchers also examin
ed levels of fine particles （粒子，微粒） in the air in 36 areas across the country．That information came from the Environmental Protection Agency．The extremely small particles came from industrial smoke and traffic, along with things like wood-burning fireplaces in houses．
In the study, every ten-microgram increase in pollution was linked to a twenty-four percent increase in the risk of a cardiovascular event．But it was related to a seventy-six percent increase in the risk of death from cardiovascular disease．
But just how do particles in the air damage the cardiovascular system? The particles may cause the lungs to swell and release chemicals from the pollutants into the blood．The chemicals then could damage the heart．
1．The passage mainly talks about______．
A．the effects of pollution on women
B．how to protect women from air pollution
C．how air pollution damages a person’s heart
D．the 
relationship between air pollution and heart diseases
2．The case of the woman wearing a face mask shows ______．
A．people are paying more and more attention to their health
B．the woman is afraid of getting heart disease
C．Lanzhou city is more heavily polluted than other cities
D．air pollution is becoming more and more serious
3．We can learn from the passage that _______．
A．air pollution is more serious than scientists thought
B．the control of air pollution is effective in some cities
C．people throughout a city have the same risk of getting heart diseases
D．air pollution affects women more than men
4．The study implies that ______．
A．air pollution has a bigger effect on older women than younger women
B．small particles in the air mainly come from industrial smoke
C．the rise in air pollution may lead to a higher death rate from cardiovascular disease
D．air pollution has been affecting people for as long as nine years in the city of Lanzhou
A woman wears a face mask to protect her from polluted air in Lanzhou, China, in December．
A new study showed air pollution might put people more at risk for heart disease than scientists had thought．Kristin Miller, a doctoral student at the University of Washington, said chances of getting the disease were related to not only which city a woman lived in, but also where in the city．The study found that the effects of air pollution were often larger within cities than between cities．
The new findings make experts suspect that current pollution limits may be inadequate．Scientists examined rates of heart attack, stroke （中风） and other cardiovascular （心脏血管的） events in women with long-term exposure to air pollution．
The study involved women over the age of fifty who had no sign of cardiovascular disease at the start of the research．The study followed the women for as long as nine years to see how they would develop cardiovascular problems．
The researchers also examined levels of fine particles （粒子，微粒） in the air in 36 areas across the country．That information came from the Environmental Protection Agency．The extremely small particles came from industrial smoke and traffic, along with things like wood-burning fireplaces in houses．
In the study, every ten-microgram increase in pollution was linked to a twenty-four percent increase in the risk of a cardiovascular event．But it was related to a seventy-six percent increase in the risk of death from cardiovascular disease．
But just how do particles in the air damage the cardiovascular system? The particles may cause the lungs to swell and release chemicals from the pollutants into the blood．The chemicals then could damage the heart．
1．The passage mainly talks about______．
A．the effects of pollution on women
B．how to protect women from air pollution
C．how air pollution damages a person’s heart
D．the relationship between air pollution and heart diseases
2．The case of the woman wearing a face mask shows ______．
A．people are paying more and more attention to their health
B．the woman is afraid of getting heart disease
C．Lanzhou city is more heavily polluted than other cities
D．air pollution is becoming more and more serious
3．We can learn from the passage that _______．
A．air pollution is more serious than scientists thought
B．the control of air pollution is effective in some cities
C．people throughout a city have the same risk of getting heart diseases
D．air pollution affects women more than men
4．The study implies that ______．
A．air pollution has a bigger effect on older women than younger women
B．small particles in the air mainly come from industrial smoke
C．the rise in air pollution may lead to a higher death rate from cardiovascular disease
D．air pollution has been affecting people for as long as nine years in the city of Lanzhou
查看习题详情和答案>>
A woman wears a face mask to protect her from polluted air in Lanzhou, China, in December．
A new study showed air pollution might put people more at risk for heart disease than scientists had thought．Kristin Miller, a doctoral student at the University of Washington, said chances of getting the disease were related to not only which city a woman lived in, but also where in the city．The study found that the effects of air pollution were often larger within cities than between cities．
The new findings make experts suspect that current pollution limits may be inadequate．Scientists examined rates of heart attack, stroke （中风） and other cardiovascular （心脏血管的） events in women with long-term exposure to air pollution．
The study involved women over the age of fifty who had no sign of cardiovascular disease at the start of the research．The study followed the women for as long as nine years to see how they would develop cardiovascular problems．
The researchers also examined levels of fine particles （粒子，微粒） in the air in 36 areas across the country．That information came from the Environmental Protection Agency．The extremely small particles came from industrial smoke and traffic, along with things like wood-burning fireplaces in houses．
In the study, every ten-microgram increase in pollution was linked to a twenty-four percent increase in the risk of a cardiovascular event．But it was related to a seventy-six percent increase in the risk of death from cardiovascular disease．
But just how do particles in the air damage the cardiovascular system? The particles may cause the lungs to swell and release chemicals from the pollutants into the blood．The chemicals then could damage the heart．
1．The passage mainly talks about______．
A．the effects of pollution on women
B．how to protect women from air pollution
C．how air pollution damages a person’s heart
D．the relationship between air pollution and heart diseases
2．The case of the woman wearing a face mask shows ______．
A．people are paying more and more attention to their health
B．the woman is afraid of getting heart disease
C．Lanzhou city is more heavily polluted than other cities
D．air pollution is becoming more and more serious
3．We can learn from the passage that _______．
A．air pollution is more serious than scientists thought
B．the control of air pollution is effective in some cities
C．people throughout a city have the same risk of getting heart diseases
D．air pollution affects women more than men
4．The study implies that ______．
A．air pollution has a bigger effect on older women than younger women
B．small particles in the air mainly come from industrial smoke
C．the rise in air pollution may lead to a higher death rate from cardiovascular disease
D．air pollution has been affecting people for as long as nine years in the city of Lanzhou
查看习题详情和答案>>A “lost tribe” that reached America from Australia may have been the first Native Americans, according to a new theory.
If proved by DNA evidence, the theory will break long established beliefs about the southerly migration of people who entered America across the Bering Strait, found it empty and occupied it.
On this theory rests the belief of Native Americans to have been the first true Americans. They would be classified to the ranks of escapee, beaten to the New World by Aboriginals (土著人) in boats.
To a European, this may seem like an academic argument, but to Americans it is a philosophical question about identity, Silvia Gonzales, of Liverpool University said .
Her claims are based on skeletons found in the California Peninsula of Mexico that have skulls quite unlike the broad Mongolian features of Native Americans. These narrow-skulled people have more in common with southern Asians, Aboriginal Australians and people of the South Pacific Region.
The bones, stored at the National Museum of Anthropology (人类学) in Mexico City, have been carbon-dated and one is 12,700 years old, which places it several thousand years before the arrival of people from the North. “We think there were several migration waves into the Americas at different times by different human groups,” Dr. Gonzales said. “The timing, route and point of origin of the first colonization of the Americas remains a most contentious topic in human evolution.”
But comparisons based on skull shape are not considered conclusive by anthropologists, so a team of Mexican and British scientists, backed by the Natural Environment Research Council, has also attempted to take out DNA from the bones. Dr. Gonzales declined yesterday to say exactly what the results were, as they need to be checked, but indicated that they were consistent(一致) with an Australian origin.
- 1.
It is generally considered that the first Native Americans came from ________.
- A.North Asia
- B.Australia
- C.South Pacific
- D.South Asia
- A.
- 2.
The skeletons found in the California Peninsula of Mexico have ________.
- A.the broad skull shape
- B.the narrow skull shape
- C.different features of Aboriginal Australians
- D.the same features of Native Americans
- A.
- 3.
The underlined “contentious” is similar in meaning to “________”.
- A.likely to cause great interest
- B.difficult to solve
- C.well-known to all
- D.likely to cause argument
- A.
- 4.
Which of the following statements is true according to the text?
- A.Research on skulls can draw an exact conclusion.
- B.DNA tests have proved the fact that the first Native Americans came from Australian.
- C.Scientists are still not sure about the origin of the Native Americans.
- D.People began to enter America across the Bering Strait about 12,700 years ago.
- A.