Read the article and select the best answer. Article: Group buying is one of the fastest growing trends in South Africa today. Industry leaders are confident the growth potential remains strong since group buying is location-specific. Start-up costs are low and profit room remains high, so many sites continue to receive invested money despite widespread criticism and Facebook's decision to _ deal business due to privacy concerns. In the early stages of all industries, some companied fail because they cannot compete with stronger companies in difficult economic conditions. To deal with difficult conditions, an alarming number of businesses are developing group buying websites in places like China and India, so the increase of group buying in South Africa is nothing more than a natural progression into the international mainstream. The group buying concept is fairly new and consumers have accepted this concept because they can now make full use of the rich information available on the Internet. Group buying is convenient and easy so it works. Anyone can view a site, join a mailing list, subscribe to RSS or print out a coupon . The current group buying structure offered by the industry leaders works although there are still challenges to overcome. Perhaps, the future of group buying is tied to the joining together of social media and mobile devices. Mobile devices are with us wherever we go and almost everyone is using some type of social media site like Facebook or Twitter to stay informed. Using GPS and social media technology to provide real time location-specific promotions would be beneficial to every consumer looking for the best deals in town. Pause for a moment and think about it! What is better than signing on to your phone while having fun in town and you receive a real time information that your favorite shop across the street is offering a killer dial? The future of the group buying in South Africa is bright and we can expect to see more advanced approaches to this concept in the future. In addition to the technological advances consumers will see the... Question: What does the passage mainly tell us? Options: A: The history of group buying B: Group buying in South Africa C: The feature of group buying D: The group buying concept
B

Read the article and select the best answer. Article: BEIJING - For the first time in decades, Chinese drivers will enjoy a toll-free journey home during the upcoming eight-day holiday, which begins on Sunday.An 820-km drive from Beijing to the coastal city of Dalian takes travelers through four toll stations and costs a total of 380 yuan ( $ 60) in toll fees, while a sleeper train is just 240 yuan. Amid growing calls, the State Council, or China's cabinet , issued a tollfree road policy in August, allowing passenger cars with seven seats or less to travel forfree on toll roads during four major holidays.The first toll-free holiday will be the upcoming eight-day Mid-Autumn Festival and National Day holiday. The removal of toll fees will not only make travel cheaper and more convenient, but will also _ the service industry, as people will spend more money on related services, such as food and accommodation. Hu Fangjun, an expert from the China Academy of Transportation Sciences, said companies funded by the toll fees will lose about 20 billion yuan each year throughout the four extended holidays due to the toll-free policy. However, new revenues earned from increasing spending during the longest holiday season will likely compensate for the losses. The companies that run the toll booths are largely state-owned, while the sector has been named as one of the most profitable in China. Roads are public. Every citizen has the right to be on the road. The toll-free policy during holidays will give the roads back to the public. and is also a way of returning wealth to the people, which will eventually boost the public's trust toward the government. China's financial revenues have enjoyed rapid growth for decades. The government is capable of offering more welfare to its people. Question: We can infer from the text that _ . Options: A: the removal of toll fees will cause more traffic problems B: the toll-ree road policy will encourage people to travel more C: the revenues will be cut down because of the toll-free road policy D: the public will get more benefit from the government
D

Read the article and select the best answer. Article: Reduce, reuse, and recycle. This familiar environmentalist slogan tells us how to reduce the amount of rubbish that ends up in landfills and waterways. The concept is being used to deal with one possibly dangerous form of waste -- electronic junk , such as old computers, cell phones, and televisions. But this process for managing e-waste may be used in an way more often than not used, a recent report suggests. "A lot of these materials are being sent to developing nations under the excuse of reuse -- to bridge the digital divide," said Richard Gutierrez, a policy researcher. One of the problems is that no one proves whether these old machines work before they hit the seaways. Because of this, the report says, e-waste is a growing problem in Lagos, Nigeria, and elsewhere in the developing world. Much of the waste ends up being thrown away along rivers and roads. Often it's picked apart by poor people, who may face dangerous exposure to poisonous chemicals in the equipment. Businessmen also pay workers a little money to get back materials such as gold and copper. This low-tech recovery process could expose workers and the local environment to many dangerous materials used to build electronics. According to Gutierrez, this shadow economy exists because the excuse of recycling and reusing electronics gives businessmen "a green passport" to ship waste around the globe. "Developing nations must take upon some of the responsibility themselves," Gutierrez said. But, he added, "A greater portion of this responsibility should fall on the exporting state." China, for example, has become a dumping place for large amounts of e-waste. The nation is beginning to take action to stop the flow of dangerous materials across its borders. The Chinese government, after many years of denial is finally beginning to take the lead. Question: From what Gutierrez said we can learn that _ . Options: A: developing countries should be responsible for this problem B: exporting countries should be mainly responsible for this problem C: neither rich nor poor countries should be blamed for this problem D: poor countries should be blamed for this problem
B