Basic Math introduces students to the basic things of mathematics, as well as some easy methods of learning it. These 30 fantastic courses are designed to provide students with understanding of arithmetic and to prepare them for Algebra (代数) and beyond.
　　The lessons in Basic Math cover every basic field of arithmetic. They also look into exponents (指数), the order of operations, and square roots. In addition to that, students also discover how a particular mathematical topic relates to other branches , and how they can be used practically.
　　Basic Math starts from easier concepts and gradually moves on to the more troublesome ones.  The lectures offer students the chance to understand of mathematical knowledge that may have seemed so frightening. They also help students prepare for college mathematics and develop confidence in this amazing field of study.
　　With the help of these lectures, they will be able to clear away the mystery (神秘性) of mathematics and face their studies with more confidence than they ever imagined. Besides, they will strengthen their ability to accept new and exciting mathematical challenges.
　　Professor H. Siegel, honored by Kentucky Educational Television as "the best math teacher in America, " is a devoted teacher and has a gift for explaining mathematical concepts in clear and interesting ways. From the basic ideas to the more difficult problems, he is a master in making math lectures learner-friendlier and less frightening
　　With a PhD in Mathematics Education form Georgia State University, Dr. Siegel now teaches mathematics at Central Arizona College.
　　If the course fails to provide complete satisfaction to you, you can easily exchange it for any other course that we offer. Or you can get your money back.
【小题1】What does the course Basic Math mainly cover?

　　WASHINGTON: Chinese scientist Yuan Longping and Dr Monty Jones of Sierra Leone were named co－winners of the 2004 World Food Prize here on Monday for their contribution to world food security and rice production.

　　In announcing the recipients in a ceremony held at the US State Department, President of the World Food Prize Foundation Kenneth Quinn lauded both scientists for their “breakthrough scientific achievements” which have significantly increased food security for millions of people from Asia to Africa.

　　Quinn said it was particularly fitting that the two pioneering rice breeders rewarded the prize during the United Nations International Year of Rice, the crop identified as the staple(主要的) diet of more than 3 billion people around the world.

　　Professor Yuan Longping is director－general of the China National Hybrid Rice(杂交水稻) Research and Development Centre in Hunan Province, China. Jones is presently executive secretary of Forum for Agricultural Research in Africa.

　　Yuan is credited with(功劳在于……) developing the world's first successful and widely grown hybrid rice varieties, revolutionizing rice cultivation in China and tripling production over a generation.

　　Jones's work recaptured the genetic(遗传的) potential(潜能) of ancient African rice by combining African and Asian rice species.

　　Present at the ceremony hosted by US Secretary of State Colin Powell were UN Food and Agriculture Director－General Jacques Diouf, US Secretary of Agriculture Ann Veneman and Minister and Deputy Chief of Mission of the Chinese Embassy Lan Lijun.

　　The World Food Prize will be formally presented to Professor Yuan and Jones on October 14 this year in Iowa, the United States.

1．Which of the following is the best title?

[　　]

A．A．pioneer of the genetic research.

B．Passion for hybrid rice.

C．Scientists from China, Africa share food prize.

D．What is the World Food Prize?

2．The underlined word “lauded” can be replaced by ________.

[　　]

3．Jones won the 2004 World Food Prize for his achievements in ________.

[　　]

A．breeding(培育) hybrid rice

B．breeding hybrid wheat

C．improving ancient African rice

D．finding the genetic secret of rice

4．Which of the following is NOT true?

[　　]

A．The ceremony was held at the US State Department

B．Professor Yuan Longping attended the ceremony hosted by US Secretary of State Colin Powell.

C．Professor Yuan and Jones will go to the USA．in October to receive the World Food Prize.

D．3 billion people around the world live on rice.

C

　　A scientist who developed a way to calculate(计算) how much water is used in the produciton of anything form a cup of coffee to a hamburger was awarded the 2008 Stockholm Water Prize.

　　Professor John Anthony Allan of the University of London in Britain won the award for introducing the idea of "virtual water(虚拟水)",a calculation method that has changed the nature of trade policy and research.

　　Allan has written seven books and published more than 100 papers.

　　The Stockholm International Water Institute said this idea is now embedded(埋藏) in the production of foods and industrial products.The institute said Allan's work had made a big effect on global trade policy and research,especially in water - scarce(缺水) regions.

　　"The improved understanding of trade and water management issues on local,regional and global scales are of the highest value for the successsful and sustainable(可持续的) use of water resources,"it said.

　　"People do not only use water when they drink it or take a shower,"the institute said. "Behind the morning cup of coffee,there are 140 liters of water that was used to grow,produce,package and ship the beans."That is about as much water as a person in England uses on average for all daily drinking and household needs.

　　"For a single hamburger,about 2,400 liters of water are needed.In te USA ,the average person uses nearly 7,000 liters of virtual water every day" It said that was more than three times the average use of a Chinese person.

　　64.Allan was awarded the prize because ______.

　　　A.he wrote seven books on trade policy

　　　B.he published more than 100 papers on water management

　　　C.he found a new kind of water in water - scarce areas

　　　D.he came up with the idea of virtual water

　　65.Which of the following is TRUE according to the passage?

　　　A.The average American uses about 7,000 liters of water a day.

　　　B.The average Chinese uses nearly 2,300 liters of virtual water a day.

　　　C.An Englishman usually drinks about 140 liters of coffee a day.

　　　D.A hamburger usually contains about 2,400 liters of water.

　　66.What effect does the idea of virtual water have?

　　　A.It helps us realize the importance of trade.

　　　B.It helps people do successful business.

　　　C.It helps us make use of water scientifically.

　　　D.It tells us how much water we use a day.

　　67.What does the underlined word "it" in the last paragraph refer to?

　　　A.The University of London.

　　　B.The calculation method.

　　　C.The Stockholm International Water Institute.

　　　D.The trade policy and research.