Article: It's interesting to see how people make use of the time they spend on public transport in Indian cities like Delhi and Mumbai. In crowded buses and trains people manage to take a short nap and some even reach the snoring stage. Or they spread out a newspaper over multiple knees and arms to read about the latest sport results or political crisis. Then there are the experienced travellers who have been playing cards with the same group over the last decade or so. They even have their specific seats so well-worn that you can make out the shape of their backsides. There is no doubt about it. Travelling by public transport is being in the thick of the seasons of life -- a sweaty life in summer where people, blissfully unaware of the rivers of sweat running down their brows and inside their clothes. At the first smell of a perfumed man or woman boarding the stuffy bus or train, most people feel they are reborn. During the rains you can't avoid getting wet or muddied. The windows, almost always, are not a perfect fit and if you're not drenched by a sudden, heavy rain shower then you are bound to catch a jet spray of muddy water caused by a fellow motorist driving fast through a puddle. Rains are a perfect time for people to switch their old umbrellas for new ones. Since there are so many that look alike, it's impossible to tell whose is whose. Winter is the time when it feels good -- or at least warm -- to be part of a crowd. It is amazing how much the collective breaths of a 100 or so people can raise the freezing temperature inside. Looking at the masses dressed in their bright red pullovers or green coats, it's fun to imagine what faces lie beneath their dark woolen hats. The cold winter passes, making way for spring. It is impossible not to see every little flower by the wayside blooming proudly. And the warm sun manages to transmit some of their pleasantness to the inside of a bus or train. Now, wouldn't it be perfect if we had a public transport worth the name in all our cities? Question: If you see people in colourful clothing and breathing heavily, you are probably travelling during the _ . Yes or no, is the answer "winter"?
Yes

Article: A green house is a building made of glass which is used for keeping warm when the outside temperature is low. In a similar way there are several gases in the atmosphere (mixture of gases that surround the earth) which trap the heat produced by the sun and prevent it from escaping. These gases are known as "greenhouse gases". And the way in which they trap heat in the atmosphere is called the "greenhouse effect". This is not simply air pollution. Most of the main greenhouse gases exist naturally in small amounts in our atmosphere, and without them the earth would be 30 degrees colder and human life would not exist. In other words, the greenhouse effect is a natural course which is to some degree helpful to us. The problem is that in the last century and a half, we have been putting too many of these gases into the earth's atmosphere by burning large quantities of coal and oil and by cutting down forest. The rapid increase in greenhouse gases is making the world warmer. The world's temperature has already gone up by half a degree this century, and the sea level has risen by 10 centimetres. If the amount of carbon dioxide in the atmosphere doubles, there will probably be a rise in the earth's temperature of between I and 4degC;. This may seem a small increase, but it would be enough to cause major changes in geography and agriculture. Large areas of the world would be flooded, and some areas would become dry and unable to produce crops. It is important, too, to consider that there may be a delay of about 30 years in the greenhouse effect. This means that we are probably experiencing only now the effect of the gases put into the atmosphere before the 1960s. Since then, our use of these gases has greatly increased. Question: If there were no greenhouse effect, _ . Yes or no, is the answer "soil would reduce the temperature by 30 degrees"?
No

Article: For hundreds of years, textbooks have put a world of knowledge in the hands of students. Paper textbooks are expensive to produce and expensive for schools to buy. Nowadays information changes so quickly that some textbooks are out of date almost before they're published. And as books are passed along from one student to the next, they get more highlighted, dog-eared, tattered, and worn. It's no secret that paper textbooks are heavy. But what you may not know is that backpack weight is an increasing problem among kids. Studies show that heavy backpacks can lead to both chronic back pain and poor posture -- and many kids are carrying a quarter of their body weight in textbooks. Today's students have grown up completely immersed in technology. iPod, iPad, computer -- these are the ways they interact with their world. They need a textbook made for the way they learn. iBooks textbooks on iPad offer a gorgeous, full-screen experience full of interactive diagrams, photos, and videos. No longer limited to static pictures to illustrate the text, now students can dive into an image with interactive captions, rotate a 3D object, or have the answer spring to life in a chapter review. They can flip through a book by simply sliding a finger along the bottom of the screen. Highlighting text, taking notes, searching for content, and finding definitions in the glossary are just as easy. And with all their books on a single iPad, students will have no problem carrying them wherever they go. McGraw-Hill, Pearson Education, and Houghton Mifflin Harcourt -- the publishers responsible for the majority of K-12 content in the US -- have created Multi-Touch textbooks available now from the iBookstore Question: What can we infer from the passage? Yes or no, is the answer "Some things don't get better with age, such as paper textbook."?
No