I'm taking a test and have to guess the right answer to the question after the article. Article: President Barack Obama rode a bicycle at the White House Science Fair on April 22. But it wasn't an ordinary bike. As he pedaled, the President stayed in place, while the energy from his pedaling powered a water filtration system. He was testing an invention created by a team of 14 students from Northeast High School, in Oakland Park, Florida. Payton Karr, 16, and Kiona Elliot, 18, attended the fair as representatives of the project."We were hoping President Obama would ride the bike, but we didn't actually expect him to," Payton told TFK. " It really meant a lot." Kiona agreed. "It was pretty awesome to see the invention, which was invented by a group of 14 high school students and one teacher, along with the help of community members, got the interest of the leader of our nation," she said. The project was an idea that came about after one of the Northeast students, Kalie Hoke, visited Haiti after the terrible 2010 earthquake and saw how difficult it was to find clean water. The students invented a portable , bicycle-powered emergency water filtration system, which can provide 20-30 people with drinking water in a 15-hour period. The teens hope their invention will one day be used by relief organizations like the Red Cross. " They can take it to places after natural disasters so that water can be clean for the people there," said Payton. Payton and Kiona were among the 100 students from more than 40 states invited to the third annual White House Science Fair, in Washington, D.C., which is also attended by leaders in science and education. President Obama started the event in 2010 to _ students interested in STEM (Science, Technology, Engineering, Maths)."Well, if you're a young person and you produce the best experiment or design, you ought to be recognized for that achievement," Obama said when he first announced the fair. President Obama praised the projects during a speech to attendees after the fair. "The science fair projects of today could become the products and businesses of tomorrow," he said.... Question: The bicycle-powered water filtration system was designed _ . Options: A: at the request of the Red Cross B: for city families to get pure water C: during the terrible 2010 earthquake in Haiti D: to provide people in disaster areas with clean water
D
(Question)
I'm taking a test and have to guess the right answer to the question after the article. Article: As goods and services improved, people were persuaded to spend their money on changing from old to new, and found the change worth the expense. When an airline equipped itself with jets, for example, its costs (and therefore air fare) would go up, but the new planes meant such an improvement that the higher cost was justified. A new car (or wireless, washing machine, electric kettle) made life so much more comfortable than the old one that the high cost of replacement was fully repaid. Manufacturers still cry their goods as persuasively as ever, but are the improvements really worth paying for? In many fields, things have now reached such a high standard of performance that further progress is very limited and very, very expensive. Airlines, for example, go to enormous expense in buying the latest jets , in which vast research costs have been spent on ly small improvements. If we abandon these vast costs we might lose the chance of cutting minutes away from flying times; but wouldn't it be better to see airfares drop dramatically, as capital costs become ly insignificant? Again, in the context of a 70 m. p. h. Limit, with lines of cars traveling so close as to control each other's speeds, improvements in performance are actually irrelevant; improvements in handling are unnecessary, as most production cars grip the road perfectly, and comfort has now reached a very high level. Small improvements here are unlikely to be worth the thousands that anybody replacing an ordinary family car every two years may have spent on them. Let us instead have cars -- or wireless, electric kettles, washing machines, television sets -- which are made to last, and not to be replaced. Significant progress is obviously a good thing, but the insignificant progression from model-change to model-change is not. Question: According to this passage, airfares may rise because _ . Options: A: the airplane has been improved B: people tend to travel by new airplanes C: the change is found to be reasonable D: the service on the airplane is better than before
(Answer)
A
Ques:I'm taking a test and have to guess the right answer to the question after the article. Article: The London Pass is the final sightseeing package that has been specially tailor-made for visitors to the city. It allows holders to make the most out of their trip ,saving them both time and money .With the London Pass you will get the following : *Free entry to your choice of over 60 popular attractions, tours, sights and museums *A useful 160' page Guidebook about the attractions plus helpful tips about the city *Ability to skip the lines at the selected attractions to save time *Optional Travel card to cover all of your transport needs The London Pass Saves You Money London can be an expensive city , and its tourist attractions are no exception .However, go sightseeing with a London Pass you could make some great savings. Take a look at the normal gate price for some popular London attractions: Tower of London x19.00; Thames River Cruise x19.00; Windsor Castle x17.00; London Bridge Experience x23.00 ; St Paul's Cathedralx15.00. Visiting those five attractions will cost well overx89. With a London Pass , these and many more attractions won't cost you a penny . The London Pass Saves You Time London is a popular destination, therefore ,attractions and sights do get very busy . Waiting in line can sometimes take hours from your sightseeing experience--that's why London Pass holders get to skip the queue at key attractions such as Tower of London, Windsor Castle and London Bridge Experience . Also, the map of London and the information about the city's public transportation system available in our Guidebook help plan the perfect sightseeing itinerary to maximize your time in the city. Practical Information Adult ticket: From x43.00 Address: Charing Crous Road, London ,WC2H OEP THL ; 01664 485020 Question: You will most probably find the passage in_. Options: A: an English textbook B: . a newspaper C: a travel brochure D: an encyclopaedia

Ans:
C