Problem: Write a multi-choice question for the following article: Article: Does it drive you crazy that your cell phone needs to be frequently charged for hours? A team of scientists led by professor Harold Kung at Northwestern University in the US may have solved your problem. They developed a lithium ion batery that holds 10 times as much power and charges 10 times more quickly than standard batteries, according to the BBC in a report on November 15. Lithium ion bateries are rechargeable and are widely used in cameras, smartphones and laptops. They charge through a chemical reaction in which lithium ions are sent between the two ends of a battery. How much power the battery holds and how fast it charges are limited by two things:how many lithium ions it has and how quickly these ions move. Current rechargeable batteries have an anode made of many carbon-based graphene sheets. To increase energy capacity, former experiments have tried to replace the carbon with silicon, which can hold far more lithium ions. However, this method did not work because the silicon was not stable enough. Kung's team managed to stabilize the silicon. They put clusters of silicon between the graphene sheets like a sandwich so that the silicon could not move around freely and take away the energy. The speed at which a battery charges is hindered by the shape of the graphene sheets because it takes a long time for the lithium to travel from one side of the sheet to the other.Sometimes a "traffic jam" occurs around the edges of the graphene. To solve this problem, Kung's team used a special chemical process to create tiny holes of 10 to 20 nanometers wide in the graphene sheets so the lithium ions would have a "shortcut" and be able to travel directly to the other side. This reduced the time it took the battery to recharge. About 15 minutes of charging can last more than a week. "Even after 150 charges, which would be one year or more of operation, the battery is still five times more effective than lithium ion batteries on the market today," said Kung. The technology could be widely available...

A: Question: We can infer from the article that _ .Options:A current rechargeable batteries usually last for 150 chargesB after one year's use, the newly developed batteries are less powerfulC batteries with more lithium ions are more powerful and charge fasterD further experiments may focus on improving the shape of graphene sheetsAnswer:B

Problem: Given the question: Write a multi-choice question for the following article: Article: There was simply too much news and too much information freely available on the net.But was it accurate? Whose opinion should we trust? A survey found that 60% of UK adults think it is worth paying for a "good newspaper", and most of those said they believed more of what they read in the paid-for newspapers. Here was something newspapers understood--here was what they could offer: news plus comment and opinion. And the Internet now offered opportunities.A newspaper was just that: news printed on paper.But the Internet now offered newspapers different places to print, and in different media. This may explain why the readership of newspapers online in the UK is very different from people who read printed newspapers. The most popular newspaper in the UK is The Sun and is also the most popular newspaper in the world.The "mid--market" audience mainly reads The Daily Mail.Of the "quality" newspapers, the most popular is the Daily Telegraph. Online, it's a different story.The most popular site is The Mail, which has 2.3 million "browsers" every day.And the next most popular site is The Guardian.
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Question: 'Which of the following is TRUE according to the passage?Options:A Printed newspapers are disappearing.B The most popular newspapers has the most popular newspaper website as well.C People from other countries also enjoy reading British newspapers.D The free news on the Internet makes people unwilling to buy newspapers.Answer:C

input question: Write a multi-choice question for the following article: Article: A report brought back by most visitors to the US is how friendly, polite, and helpful most Americans were to them. To be fair, this observation is also frequently made of Canada and Canadians, and should best be considered North American. There are, of course, exceptions. Small-minded officials, rude waiters, and ill-mannered taxi drivers are hardly unknown in the US. Yet American's friendliness and helpfulness is an observation made so frequently that it deserves comment. For a long period of time and in many parts of the country, a traveler was a welcome break in an otherwise dull existence. Dullness and loneliness were common problems of the families who generally lived distant from one another. Strangers and travelers were welcome sources of distraction, and brought news of the outside world. The tough realities of the border also shaped this tradition of hospitality. Someone traveling alone, if hungry, injured, or ill, often had nowhere to turn except to the nearest settler agent. It was not a matter of choice for the traveler or only a charitable impulse on the part of the settlers. It reflected the hardship of daily life: if you didn't take in the stranger and take care of him, there was no one else who would. And someday, remember, you might be in the same situation. Today there are many charitable organizations which specialize in helping the exhausted traveler. Yet, the old tradition of hospitality to strangers is still very strong in the US, especially in the smaller cities and towns away from the busy tourist routes. "I was just traveling through, got talking with this American, and pretty soon he invited me home for dinner, amazing." Such observations reported by visitors to the US are not uncommon, but are not always understood properly. The casual friendliness of many Americans should be understood neither as superficial nor as artificial , but as the result of a historically developed cultural tradition. As is true of any developed society, in America a complex set of cultural signals and...???
output answer: Question: Families who lived far from one another used to entertain strangers _ .Options:A to improve their hard lifeB in view of their long-distance travelC to add some taste to their own daily lifeD out of a charitable impulseAnswer:C

[Q]: Write a multi-choice question for the following article: Article: One day Thomas Alva Edison was given a letter by his teacher. His teacher asked him to give it to his mother. Edison thought it was something nice. After he returned home, he proudly gave it to his mother, saying "My teacher let me give this letter to you." Not knowing what it was, Edison's mother opened it, and then her eyes opened wide. With tears in her eyes, she looked at her son and read out the letter aloud, "Your child is a genius. This school is too small for him and doesn't have enough good teachers to train him. Please teach him yourself." The fact was that Edison liked asking strange questions in class. His teachers thought he was mentally ill. They could no longer stand him and decided to stop him from going to school. However, Edison's mother didn't give up on her son. She taught him at home. Many years after Edison's mother died and he was already one of the greatest inventors, one day he was looking through the old family things. Suddenly he saw a piece of folded paper in the corner of a drawer. He took it and opened it up. It read, "Your son is addled (mentally ill). We won't let him come to school any more." Edison cried for hours and then he wrote in his diary, "Thomas Alva Edison was an addled child, but, by his hero mother, he becomes the genius of the century." Having faith in those we love is very important. We should have faith in those around us. Even if others have given upon you, you should have faith in yourself.
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Question: In the teacher's opinion, Edison _ .Options:A wasn't hard to trainB was really a geniusC was too clever to teachD wasn't a normal childAnswer:D