I'm taking a test and have to guess the right answer to the question after the article. Article: To prevent the deserts coming near, China has planted billions of trees---to replace destroyed forests and as barriers against the sand. This isn't a cure, though, say experts, as thirsty trees can make the problem worse by taking in groundwater. "Planting tress is one way, but it isn't that simple. It doesn't solve the basic issue of water resources," says Wu Bo, a professor. "We need to calculate how much water the trees will absorb, or else it could have a negative effect." Villagers in Zhengxin have taken on this challenge, with limited success. When the irrigation channels began to run dry, Lu Xianglin switched from wheat to cotton on his land. He also planted trees to protect his fields from sandstorms. He says he still gets good yields using flood irrigation and earns a good income for his family. Other farmers haven't stuck it out : about one in three have left Zhengxin in the past 10 years after their wheat crops died. Young people who can find jobs in the towns rarely return. Last week, Mr Lu joined the other men in his village on a government-arranged trip to see the land that has been set aside for their relocation, nearly 40 miles to the south. The next day, he was back, shaking his head at the plan. The idea of uprooting his family troubles him, as does the idea of giving up the land that fed his forefathers. He prefers to stay and keep up the fight. "With enough water, this problem can be solved," Lu says. "We can plant trees and grass, and they will grow bigger. That will stop the desert." Experts say that farmers could switch to drip irrigation to lessen their water intake for growing crops. Elsewhere in the region, farmers have built brick greenhouses as part of a plan to grow vegetables using less water. Roadside signs urge farmers to "Save Water, Protect the Environment". Question: Why did Mr. Lu NOT accept the idea of relocation? Options: A: Because the plan of relocation will cost him much money. B: Because his family had trouble moving away. C: Because he was reluctant to give up his land. D: Because he would rather stay than fight against the deserts.
C

I'm taking a test and have to guess the right answer to the question after the article. Article: Farmers grow cocoa trees in the shady areas of rainforests near the Earth's equator. These trees can be difficult to grow. They require an exact amount of water, warmth, soil and protection. After about five years, cocoa trees start producing large fruits called pods. The seeds inside these pods are harvested to make chocolate. Today we travel around the world exploring the history of chocolate. Its story begins with a plant whose scientific name, Theobroma cocoa, means "food of the gods". People have been enjoying the rich flavor of chocolate, a product made from this plant. Most people know that chocolate is made from cocoa and that the origins of chocolate can be traced back to Central and South America. For centuries, the natives there regarded cocoa as a gift from the gods. But how did chocolate go from being the food of the gods to being the food of love? Historians believe the Maya of Central America first learned to farm cocoa plants around two thousand years ago. The Maya took the cocoa trees from the rainforests and grew them in their gardens. They cooked the cocoa seeds, and then crushed them into a soft substance. They used the cocoa bean as the main part in a dark, bitter drink that we would call "chocolate". They believed that chocolate had mystical characteristics -- but cocoa also had commercial value. In fact, cocoa beans were used as a form of currency that was worth its weight in gold! The explorer Christopher Columbus brought cocoa seeds to Spain after his trip to Central America in 1502. But the Spanish explorer Conquistador Hernando Cortez was the first European explorer to realize cocoa's commercial possibilities. When he arrived in the New World in 1519, he soon established his own cocoa plantation. In 1529, Cortez returned to Spain and introduced chocolate -- as a drink mixed with sugar, vanilla, and cinnamon -- to European society. The wealthy people of Spain first enjoyed a sweetened type of the chocolate drink. Later, the popularity of the drink spread throughout Europe. The... Question: The passage implies that_. Options: A: Christopher Columbus brought cacao seeds to Central America. B: The wealthy people of Spain first enjoyed a chocolate drink. C: Many people over the world enjoy a good taste of chocolate. D: Cocoa trees need an exact amount of water, warmth, soil and protection.
C

I'm taking a test and have to guess the right answer to the question after the article. Article: Half a century after the March of Dimes (a US charity organization that collects money for children) put the 20th century's most feared childhood disease on the road to eradication , Bill Gates declared polio his important job and challenged world leaders to finish the job. India, Nigeria, Pakistan and Afghanistan now have active transmission of the disease. Gates says the biggest problem with the success of the Global Polio Eradication program in those countries and elsewhere is lack of money. The Bill and Melinda Gates Foundation plans to increase its $200 million annual contribution by $102 million this year, Gates says. Gates recently met privately with Pakistan's President in Washington, D.C., to try to persuade him to provide full support for Pakistan's eradication plan. Children in the USA also are at risk, experts say. Parents who don't vaccinate their children because they are fearful of vaccine side-effects create a large number of children who are likely to be harmed by the virus. "If you increase the number of unvaccinated children, you increase the chance that this virus will find new subjects," says David Oshinsky, Pulitzer Prized-winning author of Polio: An American Story. "We've got to get this vaccine into the mouths of children," says Bruce Aylward, head of the World Health Organization's eradication program. In 1988, when the World Health Organization launched the Global Polio Eradication program, the disease killed 350,000 children a year worldwide. By last year, the total dropped to fewer than 1,500 worldwide, Aylward says. If Gates provides the final push for polio eradication, he may be remembered as much for helping prevent polio as for founding Microsoft, Oshinsky says. "As long as there's polio anywhere, people everywhere are at risk," Aylawrd says. " Question: According to Oshinsky, _ . Options: A: Gates should devote more time to Microsoft B: polio eradication is a very important cause C: vaccine side-effects should not be ignored D: polio has been brought under control
B