Read the following article and select the best answer. Article: Charlie studied in a famous college for four years. He studied hard and did well in all his subjects. He hoped to become a good teacher. This year he left the college and began to work in a middle school. He likes his students and is strict with them. He does his best to make his classes lively and interesting. One day he carefully explained a chemical reaction to the students of Grade 2 in the chemistry lab. "Be careful, everyone," he said loudly. "Before I make the experiment,there're twenty five atoms of carbon ,but after I finish it, there're twenty four atoms of carbon left!" He stopped to watch the classroom and hoped his students would go on explaining it. But the young men looked at each other and nobody answered him. He had to ask, "What happens? What makes the atom lost?" The classroom was very quiet and none of the students looked at their teacher. "Who can tell us where it has gone?" Suddenly a soft voice came from the back row, "We did not see anybody leave the lab!" Question: The students couldn't answer Charlie's questions because _ . - none of them had seen the atoms - they didn't understand their teacher - the chemical reaction was too complicated - they all wanted to drop the subject
they didn't understand their teacher

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Read the following article and select the best answer. Article: Investors soon will be able to own shares of Facebook stock. The world's biggest social media network presented documents to the Securities and Exchange Commission on Wednesday. The documents are required before the company can make its initial public offering or IPO. A date for the stock sale has yet to be announced. Experts say Facebook could raise about five billion dollars. That would be one of the biggest IPO sales ever. And it would be much bigger than Google's first public stock sale in 2004. At that time, the Internet search company raised almost two billion dollars. Facebook has 800 million users around the world. It is the second most visited website after Google. Now, experts say the social media network is in a position to become one of the most valuable Internet companies. Stock expert Anupam Palit at Greencrest Capital says that among social media sites, Facebook is in a class by itself. "It is the biggest company in this space and we believe what makes it very unique from every other company that went public last year in this space is that it is very, very profitable." said Anupam Palit. Early estimates place the total value of the social network between 75 and 100 billion dollars. That includes earlier investments by other companies. David Kirkpatrick wrote the book The Facebook Effect. He says Facebook's IPO will be historic. The stock sale could also make Facebook founder Mark Zuckerberg one of the world's youngest billionaires. He is only 27. Investment companies are likely to buy Facebook stock first. But investment manager Jim O'Shaugnessy says that is not so bad. He says the prices of some IPO stocks are too high and fall not long after they first go on sale. Recently, share prices of some Internet businesses have fallen after their stocks were first offered. For example, stocks of Linkedln, Groupon and Zynga, dropped in price by as much as 25% after going public. There were similar questions eight years ago when Google first sold stock to the public. Today, Google is one of the world's... Question: Which would be the best title for this passage? - Facebook and Its IPO - The Difference Between Facebook and Google - The Founder of Facebook - A Book Called The Facebook Effect
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Facebook and Its IPO

Ques: Read the following article and select the best answer. Article: *AmericanMalinois We have extra large,strong and healthy puppies born on May 29,2014 and raised on 2.5 acres fenced in Williston Highlands by American Malinois Foundation. They are not caged or home-raised Malinois.They have taken swimming training and full exercise routine with their parents to make sure they know how to guard themselves and other things this breed can do.I work specifically on the ones which have service dog qualities. My ideal buyer would be a disabled person in need of a mobile or medical alert service dog.The American Malinois is a working dog and is most content to bond with one person and only follow this person' s orders.Potential owners should be familiar or experienced with this breed. My fee represents the cost of feeding,grooming,boarding,training,medical and registration with the CKC(Continental Kennel Club).Puppies will have health certificates from vets. To see videos of the puppies and their parents, go to YouTube and search: American Malinois Foundation. *MiniSchnauzers We have 4 males and 4 females.Our puppies come with a health guarantee.They are trained and all of them have great personalities and would be a great addition to any home.These puppies are for pets only.To keep our bloodlines pure, we do not allow our puppies to be bred. We have been breeding for over 13 years and we only breed Mini Schnauzers. They are the best dogs. They are very smart. We will not ship our puppies. We have had people drive over 1500 miles to purchase our babies. Question: What is the author' s purpose in writing this passage? - To show two kinds of dogs he loves. - To advertise two kinds of dogs on sale. - To show that dogs are our best friends. - To prove that dogs are well-trained.
Ans: To advertise two kinds of dogs on sale.

Read the following article and select the best answer. Article: It was a sunny holiday Monday. Olivier Ferrante was cooking sausages on the barbecue and entertaining friends in his garden north of Paris when the phone rang. The call came from the BEA, France's air accidents investigation bureau , where the 38-year-old former football player and driver was an investigator. The news was grim. "An Airbus is missing over the Atlantic: we need you." As a safety investigator,Ferrante and his teams had participated, directly and indirectly,in the recovery of crashed planes from the Red Sea, the Black Sea,and every ocean. But this investigation would be his toughest ever: the plane had disappeared without a witness, or a trace on radar . At least eight ships and a dozen military aircraft gathered on the plane's last known position, about halfway between Brazil and Western Africa. After six days the aircraft's tail fin and 50 bodies were spotted on the surface and the first burning questions were answered. The plane wreckage and passenger injuries indicated the doomed Airbus was unbroken when it hit the water. It was not exploded apart by a bomb or lightning, now broken up by violent weather. Strangely, no mayday message had been sent by its pilots. Ferrante worked energetically with his team:collecting offers of help from around the world, consulting navy ministries and research organizations in France and elsewhere, and contracting suitable ships and high-tech equipment. He would not return home for another 29 days. His team used the Autonomous Underwater Vehicle(AUV) operated around the clock, searching about 400 square kilometers a day. But the race against time was lost and no signals were heard and no more wreckage was found. Day after day, the screen remained bare except for objects that turned out to be stones or garbage from ships. Stressed by media attention and painful meetings with victims' s,Ferrante went jogging one day to clear his head. Then he had an idea. He decided to look at what had happened to nine other planes that crashed after something abruptly... Question: What happened to the plane? - It exploded 11 km northeast of its last known position. - It was seen crashed over the Atlantic Ocean. - Something was wrong with its tail fin so that it went missing. - It was flying at high altitude before going missing.
It was flying at high altitude before going missing.