Read the following article and select the best answer. Article: Global warming is the process of earth's atmosphere heating up. Over the last 100 years, the average temperature of earth's atmosphere has gone up 1 Fahrenheit. The weather has not changed exactly the same way in every area of the planet. But scientists think that the rise in average temperature is already affecting the earth's climate. Many scientists now believe that global warming is caused by cutting down trees, producing more trash, and polluting the environment which are some of the reasons why the temperature has gone up. Many scientists believe that the biggest causes of global warming are new human technologies that release greenhouse gases into the atmosphere. The greenhouse effect is not new. Certain gases in the atmosphere, like carbon dioxide, nitrous oxide and methane, making it hard for heat energy to go into space. In the past, the climate didn't change much because nature produced just the right amount of greenhouse gases to deal with it. Today, most scientists are pretty sure that the rising temperature can't be blamed on nature. Ever since the industrial revolution in the 1700s, humans have relied on machines for daily life. And many of those machines give off a lot of greenhouse gases. An increase in the release of greenhouse gases from human activities is throwing nature off balance. The climate is a very complicated thing, but many scientists agree that the rising atmospheric temperature has already damaged the environment. Sheets of ice, called glaciers, are melting in Antarctica and other parts of the globe. As glaciers break off and melt into the oceans, they are adding warm water to the oceans and causing the sea level to rise. Over the past 100 years, the sea level has risen 6-8 inches around the world. That means land along the coasts is beginning to disappear under water. Bigger and warmer oceans are also adding to other weather problems caused by pollution in the atmosphere. Some places have received more rain, others have had bigger storms and a few areas in the world have... Question: What is mainly talked about in this passage? - The melting of glaciers. - Global warming. - The world's weather. - The earth's temperature.
Global warming.

Read the following 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: The author's attitude towards the future of group buying is _ . - pessimistic - optimistic - objective - subjective
optimistic

Q: Read the following article and select the best answer. Article: Are _ born or made? In my case it was definitely made. In my early 20s, I hardly went to bed before midnight, and I would always get up late the next morning. But after a while I couldn't ignore the high relationship between success and rising early. On those rare occasions where I did get up early, I noticed that my productivity was always higher. So I set out to become a habitual early riser. But whenever my alarm went off, my first thought was always to stop that noise and go back to sleep. Eventually some sleep research showed that my strategy was wrong. The most common wrong strategy is this: supposing you're going to get up earlier, you'd better go to bed earlier. It sounds very reasonable, but will usually fail. There are two main schools of thought on sleep patterns. One is that you should go to bed and get up at the same time every day. The second school says you should go to bed when you're tired and get up when you naturally wake up. However, I have found both are wrong if you care about productivity. If you sleep at fixed hours, you'll sometimes go to bed when you aren't sleepy enough. You're wasting time lying in bed awake. My solution is to combine both methods. I go to bed when I'm sleepy and get up with an alarm clock at a fixed time. So I always get up at the same time (in my case 5 a.m.), but I go to bed at different times every night. However, going to bed only when I'm sleepy, and getting up at a fixed time every morning are my ways. If you want to become an early riser, you can try your own. Question: Why did the author want to become a habitual early riser? - Because he / she wanted to have more sleep time. - Because he / she wanted to do morning exercise. - Because he / she wanted to test which school is better. - Because he / she found that the productivity was higher.
A: Because he / she found that the productivity was higher.

(Q).
Read the following article and select the best answer. Article: Technology is the application of knowledge to production. Thanks to modern technology, we have been able to increase greatly the efficiency of our work force. New machines and new methods have helped cut down time and expense while increasing overall output. This has meant more production and a higher standard of living. For most of us in America, modern technology is thought of as the reason why we can have cars and television sets. However, technology has also increased the amount of food available to us, by means of modern farming machinery and animal breeding techniques, and has made our life span longer via medical technology. Will mankind continue to live longer and have a higher quality of life? In large measure, the answer depends on technology and our ability to use it widely. If we keep making progress as we have over the past fifty years, the answer is definitely yes. The advancement of technology depends on research and development, and the latest surveys show that the united States is continuing to put billions of dollars annually into such efforts. So while we are running out of some limited resources, we may well find technological substitutes for many of them through our research programs. Therefore, in the final analysis, the three major factors of production (land, labor and capital) are all influenced by technology. When we need new skills or techniques in medicine, people will start developing new technology to meet those needs. As equipment proves to be slow or inefficient, new machines will be invented. Technology responds to our needs in helping us improve our standard of living. Question: What is the best title for the passage? - The definition of technology - Modern technology - The application of technology - The development of technology
(A).
Modern technology