题目内容
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193 Random cause or system variation is:
A. generally present in every process
B. the responsibility of the inspection of the process
C. the responsibility of the workers of the process
D. the responsibility of management
E. A and D only
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更多“193Random cause or system vari…”相关的问题
A.By executing a damaging program on the server
B.By initiating an ICMP flood
C.By initiating a broadcast storm
D.By filling the server’s hard drive to capacity
A.There is a probable cause that a crime has been committed.
B.There is an expectation that evidence exists of the crime.
C.There is probable cause to enter someone's home or business.
D.There is a written document detailing the anticipated evidence.
A、express
B、excuse
C、adjust
D、exposure
B、What factors cause the difference
C、How much care they pay to the details of appearance
D、It’s easy for a man to answer a woman’s question of how she looks
Scientists have found that the cause of this strange weather is that the air circulation pattern has changed and is now more variable than earlier in the twentieth century. This means that different regions of the world get long spells (持续时间) of the same type of weather, whether hot , cold, wet or windy.
However, weather experts have different views about why this has happened. One theory is that the temperature of the sea has increased. Another is that man’s activities on earth have disturbed the balance of nature.
Whatever the cause, the economics of many countries in the world depend upon the weather. And until we know exactly what effect man’s activities are having on the weather, we cannot make changes which might help. So for the moment the only answer is …wait and see!
26. Which of the following statements is TRUE according to the first paragraph？
A. We have never predicted the weather.
B. Man is now able to control the weather.
C. Strange weather has appeared only in some North American countries.
D. It has always been impossible for man to predict the weather accurately.
27. The strange weather patterns on the earth can he best described as ________.
A. steady and balanced C. likely to cause serious disasters
B. changeable but predictable D. unpredictable but favorable to man
28. The word “affecting” in Paragraph 1 can be replaced by ________.
A. yielding good crops in C. causing few losses in
B. having harmful effects on D. producing desired effects on
29. We can learn from Paragraph 2 that ________.
A. weather patterns are similar in different regions of the world
B. the air circulation pattern remains unchanged in the last century
C. our weather depends on the changes in the air circulation pattern
D. it is possible to predict weather patterns over a long period of time
30. It can be learned from this passage that ________.
A. scientists have similar opinions about the changing weather
B. no one is sure about the cause of the changing weather
C. cutting down forests has affected the climate
D. the weather will become worse in the future
“Energy independence” and its rhetorical (修辞的) companion “energy security” are, however, slippery concepts that are rarely though through. What is it we want independence from, exactly？
Most people would probably say that they want to be independent from imported oil. But there are reasons that we buy all that old from elsewhere.
The first reason is that we need it to keep our economy running. Yes, there is a trickle(涓涓细流)of biofuel(生物燃料)available, and more may become available, but most biofuels cause economic waste and environmental destruction.
Second, Americans have basically decided that they don't really want to produce all their own oil. They value the environmental quality they preserve over their oil imports from abroad. Vast areas of the United States are off-limits to oil exploration and production in the name of environmental protection. To what extent are Americans really willing to endure the environmental impacts of domestic energy production in order to cut back imports？
Third, there are benefits to trade. It allows for economic efficiency, and when we buy things from places that have lower production costs than we do, we benefit. And although you don't read about this much, the United States is also a large exporter of oil products, selling about 2 million barrels of petroleum products per day to about 90 countries.
There is no question that the United States imports a great deal of energy and, in fact, relies on that steady flow to maintain its economy. When that flow is interrupted, we feel the pain in short supplies and higher prices, At the same time, we derive massive economic benefits when we buy the most affordable energy on the world market and when we engage in energy trade around the world.
61. What does the author say about energy independence for America？()
A.It sounds very attractive.
B.It ensures national security.
C.It will bring oil prices down.
D.t has long been everyone's dream.
62. What does the author think of biofuels？()
A.They keep America's economy running healthily.
B.They prove to be a good alternative to petroleum.
C.They do not provide a sustainable energy supply.
D.They cause serious damage to the environment.
63. Why does America rely heavily on oil imports？()
A.It wants to expand its storage of crude oil.
B.Its own oil reserves are quickly running out.
C.It wants to keep its own environment intact.
D.Its own oil production falls short of demand.
64. What does the author say about oil trade？()
A.It proves profitable to both sides.
B.It improves economic efficiency.
C.It makes for economic prosperity.
D.It saves the cost of oil exploration.
65. What is the author's purpose in writing the passage？()
A.To justify America's dependence on oil imports.
B.To arouse Americans' awareness of the energy crisis.
C.To stress the importance of energy conservation.
D.To explain the increase of international oil trade.
Mega-cities
In 1950, New York was the only city with more than 10 million inhabitants. There are now 11cities housing over 11 million people each. Tokyo alone has 17 million. In 1995, their combined population totaled 166 million; in 2015 it is forecast to be over 204 million.
The world’s urban population, increasing at four times the rate of rural populations, will double in the period 1990-2025, to over five billion. Consequently, two-thirds of the people of the world will live in cities, some of which will be huge. Moreover, about 90% of the growth will be in developing countries. This growth, adding around 60 million people per year to city population, will be mainly in Southeast Asia and Africa. The consequences are dramatiC.This is change on a scale never before experienced, bringing with it considerable challenges and opportunities.
Why does this growth happen？ Most of it results from internal migration rather than the international movement of people, and is caused by a variety of push and pull factors.
One push factor is due to pressure on land availability. Improved health brings population growth, causing people to move out of rural areas. Others move because of climate change or poor farming methods which often result in deforestation and flooding. Such changes can alter the social structure, leading people to move. Furthermore, civil war or regional conflicts also cause disruption, driving people out of rural areas.
On the other hand, there are the pull factors. Cities attract people because of the demand for labor in the manufacturing and service industries. As a result, they offer a higher standard of living to the lucky ones. Cities also tend to offer greater personal freedom.
The world economy has expanded five-fold since 1950, with the cities driving the expansion. Much of this economic expansion has been in the developing countries of Southeast Asia. Therefore, most of the mega-cities of the future will be found there.
1.The combined total population of these 11 cities ________.
A.was 166 million in 1950
B.was 17 million in 1995
C.is 204 million now
D.will be over 204 million in 2015
2.
The world ’ s rural population ________.
A.increased at one fourth the rate of urban population
B.increased at four times the rate of urban population
C.will be four times bigger by 2025
D.will double in the period 1990-2025
3.
Which of the following is true according to this passage？ _________.
A.There are now 11 cities with a total population of 11 million people.
B.The world ’ s urban population will be four times bigger by 2025
C.Various push and pull factors cause people to move 正确
D.Two-thirds of the world ’ s population will live in cities in Southeast Asia and Africa.
4.
People choose to leave rural areas partly because _________.
A.climate change or poor farming methods result in deforestation and flooding 正确
B.the living standards of cities are much lower
C.the population of rural areas increased faster than that of urban areas
D.there are not enough space for people to live there
5.
We can conclude from the last paragraph that_________.
A.the world economy has declined since 1950
B.economic expansion leads to mega-cities 正确
C.the expansion is mainly taking place in Europe
D.there isn ’ t any economic expansion in the developing countries
cancer. originally,because of a lawsuit that alleged such a link Network news programs ran their own tests of cell phones,reporting to the public that some cell phones exceed the maximum level of emitted radio frequency energy allowed by the US Federal Communications Commission.
In 2000.it was estimated that there were 92 million cell phone users in the United States and this number was growing by 1 million every month. More recently,the Cellar Telecommunications & Internet Association estimated that there were almost 170 million US cell phone users, and the seriousness of brain tumours, this is clearly a topic of wide concern.This report summarizes what we now know about the carcinogenicity of using cell phones.
Cell phones operate with radio frequencies.a form. of energy located on the electromagnetic spectrum between F M radio waves and the waves used in microwave ovens,radar;and satellite stations.Cell phones do not emit ionizing radiation,the type that damages DNA and is known to have the ability to cause cancer.
Cell phone technology works on a system of geographically separated zones called "cells" Each cell has its own "base station" that both receives and emits radio waves.When a call is placed from a cell phone,a signal is sent from the cell phone antenna to that cell's base station antenna.The base station responds to the cell phone signal by assigning the phone an available RF channel.When the RF channel is assigned,radio signals are simultaneously received and transmitted, allowing voice information to be carried between the cell phone and the base.The base station transfers the call to a switching centre.where the call can be transferred to a local telephone carrier or another cell phone.
6.There has existed argument about the link between cell phone and brain tumour.()
7.The rapid growing number of cell phone users has been a great concern in the US.()
8.The 3rd paragraph tries to prove that cell phones do not cause brain cancer.()
9.A switching centre is needed when we make a call through cell phone.()
10.The topic of the passage is about cell phone and cancer.()
CDC's team of “virus hunters” is supported by specialized public health teams both in West Africa and at the CDC Atlanta headquarters. Together, they offer continuous support to save lives and protect people. CDC works closely with a number of U.S. government agencies, national and international partners. CDC's experience of working with Ebola is important to the World Health Organization's growing West Africa Ebola response.
On Sept. 2, 2014, CDC Director, Tom Frieden called for more international partners to join this effort. “The sooner the world comes together to help West Africa, the safer we all will be. We know how to stop this outbreak. There is a window of opportunity to do so the challenge is to scale up the massive response needed to stop this outbreak.”
CDC's response to Ebola is the largest international outbreak response in CDC's history with over 100 disease specialists on the ground in West Africa, supported by hundreds of public health emergency response experts stateside , activated at Level 1, its highest level, because of the significance of this outbreak.
The CDC supports affected countries to establish Emergency Operations Centers at national and local levels and helps countries track the epidemic including using real-time data to improve real-time response.
Efforts in West Africa to identify those infected and track people who have come into contact with them are improving. The CDC is operating and supporting labs in the region to improve diagnosis and testing samples from people with suspected Ebola from around the world. Local health care systems are strengthened through communication, coordination with partners and training on infection control for health care workers and safe patient treatment.
26. The 2014 Ebola out bread ask is the first one in western countries.()
27. The headquarters of CDC is in Atlanta.()
28. CDC works closely with some US government agencies, national and international partners in response to the large Ebola outbreak.()
29. There were less than 100 disease specialists from CDC in West Africa for the Ebola response.()
30.CDC is operating and supporting labs in the region to test samples from people with suspected Ebola in West Africa.()
I'm hardly alone, which is bad news for the world's oceans. Partly because more and more sushi is demanded, we're fast fishing out our seas. Some researchers estimate that if we don't change the way we harvest the oceans, all the commercial fisheries (捕鱼业) in the world could disappear as early as 2048. That could mean no more fish to buy in your local supermarket.
Fortunately, scientists are looking for ways to fish sustainably (可持续地). One method is a quota system that sets a limited amount to every fisherman or corporation who wants a share of the total catch for certain sea area. These catch shares get rid of the possibility to over fish.A recent study in Science found that the system can prevent fishery from dying and even make it better over time. "It's truly a win-win situation," says Steven Gaines, a marine biologist at the University of California at Santa Barbara and one of the study's co-authors.
Consumers also can help save the seas through the fish they buy. California's Monterey Bay Aquarium Institute is coming out with pocket guides to sustainable sushi. The researchers base their ratings on the health of a wild fish's population as well as the impacts of fish-farming operations. Oysters, for example, grow fast and can be farmed sustainably, but salmon can't. The researchers also take fishing practices into consideration: catching big-eye tuna (金枪鱼) can cause its nearby fish to die, which certainly no one wants to see. It is hoped that, by making the right choice, consumers can encourage businesses to fish in a more sustainable way.
1、The author loved _____ when he lived in Tokyo.
A、playing football
B、eating sea food
C、singing and dancing
D、reading newspapers
2、If we continue to fish in this way, ______.
A、the fisheries could make a lot of money
B、more and more sushi would be demanded
C、there could be no fish in the oceans
D、the supermarkets could disappear
3、The "quota system" is a system which ______.
A、sets a limited amount to fishermen or companies
B、enables everyone to fish as much as possible
C、prevents fishery from getting better over time
D、is not a way to guarantee sustainable fishing
4、According to the last paragraph, the researchers base their ratings on _____ aspects.
A、one
B、two
C、three
D、four
5、The example of catching big-eye tuna is to prove that _____.
A、the quota system is a win-win situation
B、the pocket guides are helpful to sustainable sushi
C、the health of a wild fish's population is important
D、the researchers base the ratings on fishing practice
