题目内容
（请给出正确答案）
A、subgroup analysis
B、Heterogeneity test
C、Rank sum test
D、correlation test
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
抱歉！暂无答案，正在努力更新中……
更多“Before combined the data from independent studies for a Meta analysis, it should be performed”相关的问题
A．They were located away from large cities.
B．They used new technology to produce power.
C．They did not allow flour to cool before it was placed in Barrels.
D．They combined technology with the outwork system.
The actual amount of water in the plant at any one time, is only a very small part of what passes through it during its development. The processes of photosynthesis (光合作用), by which carbon dioxide and water are combined — in the presence of chlorophyll (叶绿素) and with energy derived from light — to form. sugars, require that carbon dioxide from the air enter the plant. This occurs mainly in the leaf. The leaf surface is not solid but contains great numbers of minute openings, through which the carbon dioxide enters. The same structure that permits the one gas to enter the leaf, however, permits another gas — water vapor — to be lost from it. Since carbon dioxide is present in the air only in trace quantities (3 to 4 parts in 10,000 parts of air) and water vapor is near saturation in the air spaces within the leaf (at 80F, saturated air would contain about 186 parts of water vapor in 10,000 parts of air), the total amount of water vapor lost is many times the carbon dioxide intake. Actually because of wind and other factors, the loss of water in proportion to carbon dioxide intake may be even greater. Also, not all of the carbon dioxide that enters the leaf is synthesized into carbohydrates.
A growing plant needs water for all of the following except ______ .
A．forming sugars
B．sustaining actively growing parts as well as woody stems
C．absorbing mineral elements
D．taking in carbon dioxide from the air
Part A
Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D . Mark your answers on ANSWER SHEET 1.
Most growing plants contain much more water than all other materials combined. C. R. Barnes has suggested that it is as proper to term the plant a water structure as to call a house composed mainly of brick a brick building. Certain it is that all essential processes of plant growth and development occur in water. The mineral elements from the soil that arc usable by the plant must be dissolved in the soil solution before they can be taken into the root. They are carried to all parts of the growing plant and are built into essential plant materials while in a dissolved state. The carbon dioxide (CO2 ) from the air may enter the leaf as a gas but is dissolved in water in the leaf before it is combined with a part of the water to form. simple sugars --'the base material from which the plant body is mainly built. Actively growing plant parts are generally 75% to 90% water. Structural parts of plants, such as woody stems no longer actively growing, may have much less water than growing tissues.
The actual amount of water in the plant at ashy one time, however, is only a very small part of what passes through it during its development. The processes of photosynthesis, by which carbon dioxide and water are combined -- in the presence of chlorophyll and with energy derived from light- to form. sugars, require that carbon dioxide from the air enter the plant. This occurs mainly in the leaves. The leaf surface is not solid but contains great numbers of minute openings, through which the carbon dioxide enters. The same structure that permits the one gas to enter the leaf, however, permits another gas -- water vapor -- to be lost from it. Since carbon dioxide is present in the air only in trace quantities (3 to 4 parts in 10,000 parts of air) and water vapor is near saturation in the air spaces within the leaf (at 80°F, saturated air would contain about 186 parts of water vapor in 10,000 parts of air), the total amount of water vapor lost is many times the carbon dioxide intake. Actually, because of wind and other factors, the loss of water in proportion to carbon dioxide intake may be even greater than the relative concentrations of the two gases. Also, not all of the carbon dioxide that enters the leaf is synthesized into carbohydrates.
A growing plant needs water for all of the following EXCEPT ______.
A．forming sugars
B．sustaining woody stems
C．keeping green
D．producing carbon dioxide
The power of words, then lies in their association with the things they bring up before our minds. Words became filled with meanings for us by experience; and the longer we live, the more certain words recall to us the glad and sad events of our past; and the more we read and learn, the more the number of words that mean something to us increase.
Great writers are those who not only have great thoughts but also express these thoughts in words that appeal powerfully to our minds and emotions. We should therefore learn to choose our words carefully and use them exactly, or they will make our speech silly and impolite.
The origin of language is ______.
A．clearly explained in this passage
B．a matter that can not be or has not been explained or understood
C．a question that was difficult to answer
D．a problem already solved
Task 2
Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45.
How man first learnt to invent words is unknown; in other words, the origin of language is a mystery. All we really know is that man, unlike animals, somehow invented certain sounds to express thoughts and feelings, actions and things, so that they could communicate with each other; and that later they agreed upon certain signs, called letters, which could be combined to stand for those sounds, and which could be written down. Those sounds, whether spoken or written in letters, we call words.
The power of word, then lies in their association with the things they bring up before our minds. Words became filled with meanings for us by experience; and the longer we live, the more certain words recall to us the glad and sad events of our past; and the more we read and learn, the more the number of words that mean something to us increase.
Great writers are those who not only have great thoughts but also express these thoughts in words that appeal powerfully to our minds and emotions. We should therefore learn to choose our words carefully and use them exactly, or they will make our speech silly and impolite.
The origin of language is ______.
A．clearly explained in this passage
B．a question that was difficult to answer
C．a matter that can not be or has not been explained or understood
D．a problem already solved
听力原文： By the end of the 1980s, U2 had established itself not only as one of the world's most popular bands but also as one of the most innovative. The members are Bono, the Edge, Adam Clayton and Larry Mullen Jr. The band members were attending a Dublin secondary school when they began rehearsing in spite of their lack of technical expertise. The band's early records were characterized by an intense spirituality, and they commented on social and political issues, with compassion and tenderness.
The group became renowned for its inspirational live performances before it made much of an impact on the pop charts. But with the multimillion-selling success of The Joshua Tree album and the number one hits With or Without You and I Still Haven't Found What I'm Looking For, U2 became pop stars.
On Rattle and Hum, the bend explored American roots music—blues, country, and folk—with typical earnestness, but were ridiculed by some critics who found the project shallow.
U2 reinvented itself for the new decade, reemerging in 1991 with the album Achtung Baby and a sound heavily influenced by European experimental, electronic, and disco music. However, despite the flashy exterior, the band's lyrics remained obsessed with matters of the soul. In 2000, U2 released the aptly entitled (All That You Can't Leave Behind), which combined the elements of the band's earlier music.
(23)
A．Intense spirituality.
B．Inspirational live performance.
C．Innovativeness.
D．Influenced by European disco music.
Ford
Ford&39;s great strength was the manufacturing process — not invention. Long before he started a car company, he was a worker, known for picking up pieces of metal and wire and turning them into machines. He started putting cars together in 1891. Although it was by no means the first popular automobile.the Model T showed the world just how creative Ford was at combining technology and market.
The company&39;s assembly line alone threw America&39;s Industrial Revolution into overdrive (高速运转). Instead of having workers put together the entire .car, Ford&39;s friends, who were great toohnakers from Scotland, organized teams that added parts to each Model T as it moved down a line. By the time Ford&39;s Highland Park plant was humming (嗡嗡作响) along in 1914, the world&39;s first automatic conveyor belt could turn out a car every 93 minutes.
The same year Henry Ford shocked the world with the $ 5—a day minimum wage scheme, the greatest contribution he had ever made. The average wage in the auto industry then was $ 2.34 for a 9-hour shift. Ford not only doubled that, he also took an hour off the workday. In those years it was unthinkable that a man could be paid that much for doing something that didn&39;t involve all awful lot of training or education. The Wall Street Journal called the plan "an economic crime", and critics everywhere laughed at Ford.
But as the wage increased later to daily $10, it proved a critical component of Ford&39;s dream to make the automobile accessible (可及的) to all. The critics were too stupid to understand that because Ford had lowered his costs per car, the higher wages didn&39;t matter — except for making it possible for more people to buy Cars.
Paragraph 1 ______.
A. Ford&39;s Opponents B. The Assembly LineC. Ford&39;s Great Dream D. The Establishment of the CompanyE. Ford&39;s Biggest Contribution F. Ford&39;s Great Talent
Paragraph 2 ______.
A. Ford&39;s Opponents B. The Assembly LineC. Ford&39;s Great Dream D. The Establishment of the CompanyE. Ford&39;s Biggest Contribution F. Ford&39;s Great Talent
Paragraph 3 ______.
A. Ford&39;s Opponents B. The Assembly LineC. Ford&39;s Great Dream D. The Establishment of the CompanyE. Ford&39;s Biggest Contribution F. Ford&39;s Great Talent
Paragraph 4 ______.
A. Ford&39;s Opponents B. The Assembly LineC. Ford&39;s Great Dream D. The Establishment of the CompanyE. Ford&39;s Biggest Contribution F. Ford&39;s Great Talent
The assembly line made it possible to ______.
A. criticized by the media B. the low wage in the auto industry C. their lower prices D. produce cars in large numbers E. the 8-hour shift F. combined technology and market
Ford was the first to adopt ______.
A. criticized by the media B. the low wage in the auto industry C. their lower prices D. produce cars in large numbers E. the 8-hour shift F. combined technology and market
Ford&39;s cars became available to ordinary people thanks to ______.
A. criticized by the media B. the low wage in the auto industry C. their lower prices D. produce cars in large numbers E. the 8-hour shift F. combined technology and market
Ford&39;s higher-wage and lower-cost strategy was strongly ______.
A. criticized by the media B. the low wage in the auto industry C. their lower prices D. produce cars in large numbers E. the 8-hour shift F. combined technology and market
请帮忙给出每个问题的正确答案和分析，谢谢！
PART C
Directions: You will hear three dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE.
听力原文：W: Today, we invite Mr. Sonderim to say something about the euro. Mr. Sonderim, could you tell us the origin of the euro？
M: Well, the 1992 Maastricht Treaty proposed a single currency for the European Union. The participating countries decided on the name "euro" at a summit in Madrid in 1995 and the currency was launched on January 1, 1999.
W: What is it worth？
M: When the euro was launched in 1999, one euro was worth 1.17 U. S. dollars or 71 British pence. However, the weakness of the eurozone economies compared with that of the United States, combined with the inexperience of the European Central Bank in dealing with the international markets, has meant that since its launch the value of the euro had declined significantly. In December 2001, one euro was worth little more than 89 cents or 63 pennies, a 20% drop on its initial value.
W: Do you think it will affect the daily life of ordinary people？
M: I suppose so. For example, one of the major headaches for participating countries has been the conversion of public telephones, vending machines, and shopping trolleys to accept euro coins. Although a conversion process has been in full swing since before 1999, there are reports that some countries are not ready for the euro.
W: So what does it look like？
M: There are seven notes designed by the Austrian artist Robert Kalina. The designs show the "seven ages" of European development, with windows and gateways on the front, and bridges on the back. In addition, there are eight coins designed by the Belgian artist Luc Luycx. All euro coins are round, but have differences in composition, weight, thickness, and milling to ensure that the blind can easily distinguish between them. On the front there is a European design, common to all coins, and on the back a "national" design from the central bank of issue. Despite the "national identities", all coins can be spent through out the euro zone regardless of their origin.
When was the euro launched？
A．1992.
B．1995.
C．1999.
D．2001.
The power of words, then, lies in their combinations--the things they bring up before our minds. Words become filled with meaning for us by experience; and the longer we live, the more certain words recall to us the glad and sad events of our past; and the more we read and learn, the more the number of words that mean something to us increases.
Great writers are those who not only have great thoughts but also express these thoughts in words which appeal powerfully to our minds and feelings. This charming and telling use of words is what we call literary (文字的) style. Above all, the real poet is a master of words. He can convey his meaning in words which sing like music, and which by their position and association can move men to tears. We should therefore learn to choose our words carefully and use them accurately, or they will make our speech silly and rude.
The origin of language______.
A．is reflected in sounds and letters
B．is handed down from generation to generation
C．dates back to the prehistoric period
D．is a problem not yet solved
警告：系统检测到您的账号存在安全风险
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
