Read the following article and select the best answer. Article: Studies show farmland in Africa is often lacking in important nutrients. But researchers say combining different farming methods may help. Since the world food crisis several years ago, researchers have directed more of their attention to small farms. Most farms in areas south of the Sahara Desert are only about one or two hectares. One of the goals is to increase production without necessarily clearing more land to grow additional crops. American researchers say that can happen with greater use of an agricultural system called perennation. It mixes food crops with trees and perennial plants - those that return year after year. Mr. Reganold, who is with Washington State University, says poor soil may have resulted from years of weathering that washed away many nutrients. He says some farmers may have done more harm than good. He estimates that up to two billion dollars worth of nitrogen, phosphorous and potassium is lost from African soil each year. The scientist says the word perennation defines three systems that are already used in Africa. The oldest of the three is called evergreen agriculture. This is where farmers plant trees with their crops. John Reganold says farmers in Africa have been doing this for sixty years, but it seems to be growing in popularity. The method is gaining widespread use in countries such as Niger, Burkina Faso, Malawi and Zambia. The trees are planted among maize, millet or sorghum crops. They not only add nitrogen to the soil through their roots, but also through their leaves when they fall off and break down. At other times of the year, the trees can protect plants from strong sunlight. Mr. Reganold was one of three researchers who wrote a report about perennation. It was published in the journal Nature. Question: Farmland in Africa _ . - is often small in size - can produce more than enough crops for Africans - is short of important nutrients - has got the attention of scientists around the world
is short of important nutrients

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Read the following article and select the best answer. Article: Here are some world-famous cultural sites that you may be interested in: Old City of Jerusalem The Old City was given a World Heritage Status in 1981 and placed on the "World Heritage in Danger List" the following year. The city has had a history of three different religions fighting over their holy sites and yet also living together in the same city. Jerusalem has always been of great symbolic importance. Visit http://whc.unesco.org/en/list/148for more information. Khami Ruins National Monument The City of Khami, which developed after the capital of Great Zimbabwe had been given up in the mid-16th century, is of great archaeological value. The discovery of objects from Europe and China shows that Khami was a major centre for business over a long period of time. Visit http://whc.unesco.org/en/list/365for more information. Ancient City of Pingyao Pingyao is a typically well-kept example of an ancient Chinese city, founded in the 14th century. It is most famous for its ancient buildings which were in connection with the ancient Chinese banks --Qianzhuang or Piaohao. It provides a complete picture of cultural, social, economic and political development during one of the most important periods of Chinese history. Visit http://whc.unesco.org/en/list/812for more information. Mapungubwe Cultural Landscape Mapungubwe is set against the northern border of South Africa that joins Zimbabwe and Botswana. Mapungubwe had developed into the largest kingdom in South Africa before it was given up in the 14th century. What survive now are the almost _ remains of the palace sites and also the entire settlement area, as well as two earlier capital sites. It shows a perfect picture of the development of social and political structures over 400 years. Visit http://whc.unesco.org/en/list/1099for more information. Question: If you are very interested in banking, you can visit _ . - the Old City of Jerusalem - the Ancient City of Pingyao - the Khami Ruins National Monument - the Mapungubwe Cultural Landscape
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the Ancient City of Pingyao

Ques: Read the following article and select the best answer. Article: It is pretty much a one-way street. While it may be common for university researchers to try their luck in the commercial world, there is very little traffic in the opposite direction. Pay has always been the biggest deterrent, as people with families often feel they cannot afford the drop in salary when moving to a university job. For some industrial scientists, however, the attractions of academia outweigh any financial considerations. Helen Lee took a 70% cut in salary when she moved from a senior post in Abbott Laboratories to a medical department at the University of Cambridge. Her main reason for returning to academia mid-career was to take advantage of the greater freedom to choose research questions. Some areas of inquiry have few prospects of a commercial return, and Lee's is one of them. The impact of a salary cut is probably less severe for a scientist in the early stages of a career. Guy Grant, now a research associate at the Unilever Centre for Molecular Informatics at the University of Cambridge, spent two years working for a pharmaceutical company before returning to university as a post-doctoral researcher. He took a 30% salary cut but felt it worthwhile for the greater intellectual opportunities. Higher up the ladder, where a pay cut is usually more significant, the demand for scientists with a wealth of experience in industry is forcing universities to make the transition to academia more attractive, according to Lee. Industrial scientists tend to receive training that academics do not, such as how to build a multidisciplinary team, manage budgets and negotiate contracts. They are also well placed to bring something extra to the teaching side of an academic role that will help students get a job when they graduate, says Lee, perhaps experience in manufacturing practice or product development. "Only a small number of undergraduates will continue in an academic career. So someone leaving university who already has the skills needed to work in an industrial lab has far more potential in the... Question: What was Helen Lee's major consideration when she changed her job in the middle of her career? - Flexible work hours. - Her research interests. - Her preference for the lifestyle on campus. - Prospects of academic accomplishments.
Ans: Her research interests.

Ques: Read the following article and select the best answer. Article: YANGON -- Myanmar has officially accepted an offer of the United States to send humanitarian aid to the country's cyclone(;)victims, state radio reported Friday in a night broadcast Myanmar Deputy Foreign Minister U Kyaw Thu gave the assurance Friday, saying that the country is receiving such relief aid from any country without limit at this time according to its policy of dealing with the disaster, the report said. Kyaw Thu denied rumors about Myanmar's turning down of such relief materials from Western countries but accept those from nations in good relations with Myanmar, saying that the country has never done so in this case. Kyaw Thu said that well wishers abroad may make cash donation through Myanmar embassies stationed there, while those who like to donate relief goods may present at the Yangon International Airport and seaports. According to the report, the US relief aid would arrive in Yangon in days. A foreign ministry's statement said earlier on Friday that at this moment, the international community can best help the victims by donating emergency provisions such as medical supplies, food, cloth, electricity generator, and materials for emergency shelter or with financial assistance," adding that "Myanmar will wholeheartedly welcome such course of action". The government and the people of Myanmar are grateful to the friendly nations, the United Nations, international organizations, non-governmental organizations, private individuals and others for their sympathy and generosity." it said. Question: We Chinese may denote money to help the country's cyclone victims through _ . - Myanmar embassies in Beijing. - the Yangon International Airport - the United Nations - the Yangon International seaports.
Ans:
Myanmar embassies in Beijing.