input: Make use of the article to answer the questions. When NASA astronaut Scott Kelly completes his yearlong mission on the International Space Station next year, he'll come back just a little bit younger than his twin, Mark, than he was before. This is because time travels more slowly in space, a phenomenon first described by Albert Einstein's 1915 theory of general relativity.

This December, universities and academies around the world are celebrating the 100th anniversary of the theory's publication.

Even 60 years after his death, Einstein is still the most important scientist of the modern era. Looking back as far as 2,400 years ago, only Newton, Galileo and Aristotle were his equals.

Born in the era of horse-drawn carriages, his ideas started a technological revolution that brought about more change in one century than in the 2,000 years before.

In 1905, Einstein published four important scientific papers. These completely changed people's ideas about space, time, light and matter. In one of these papers Einstein. introduced his theory of special relativity. Two groundbreaking parts of the theory were about the relationship between mass and energy and the speed of light. Einstein was able to show that mass and energy were connected through the formula E=MC2. The theory also says that no object can travel faster than the speed of light.

About 10 years later came his theory of general relativity, the theory that modern physics is really based on. In Einstein's mathematics, space has three dimensions, and the fourth dimension is time. Space and time are part of one continuum, called space-time. The presence of mass changes space-time, which explains where gravity comes from.

Computers, satellites, telecommunication, lasers, television and nuclear power, many of the biggest developments in the modern world, can be linked to Einstein's work.

"We are a different people than we were a century ago," said astrophysicist Michael Shara of the American Museum of Natural. History, "completely different, because of Einstein."

However, there's more to him beyond the image of a science mastermind. Einstein, as a person, has also become a grandfatherly icon in our culture.

He liked playing Mozart on his Violin and keeping fit by hiking and walking. Power was not his goal. In 1952, the young nation of Israel asked Einstein to be its president, but he refused.

And, yes, he was eccentric. With hair like that, how could he not be? 1. Scott Kelly is what?
2. Does time travel more quickly in space?
3. What year did Einstein introduce the theory of relativity?
4. Even after death, Einstein is considered to be what?
5. Who were the only two people considered to be his equals?
6. He was born in the era of what?
7. His scientific papers completely changed people's ideas about what?
8. What formula did he come up with?
9. No object can travel faster than what?
10. Modern technology can be linked to what?
numbered_answers: 1. an astronaut
2. no
3. 1915
4. the most important scientist the era
5. Newton, Gailieo and Aristotle
6. horse-drawn carriages
7. time, light and matter.
8. E=MC2
9. the speed of light.
10. Einstein's work.

input: Make use of the article to answer the questions. Practicing yoga is a helpful, popular way to keep fit. It has many followers around the world. There are many kinds of yoga. You may have heard of "hot yoga" before. Now, in India, a new kind of yoga, water yoga, is becoming more and more popular among the local people. In the city of Agra, people practice yoga in water. It is more difficult to practice yoga in water than on land. But practicing yoga in water can be good for your flexibility . Harish Chaturvedi, a lawyer, teaches people water yoga _ --even the poor people can learn from him. "Water yoga can become more popular than other kind of yoga, because the body does not get tired so quickly," he said. "Everybody can learn to swim, but if they learn yoga at the same time, they will never feel tired." "The level of Oxygen is very high in water, and you will not have any breathing problem," he added. Harish believes that water yoga really helps people to keep away from illness. He mainly trains children. He has classes at the swimming pool of a local sports room regularly. Many children are interested in it and come to team from him. "Harish is very good at performing yoga in water," said Sudhir Narayan, a water yoga student. "He is teaching children free of cost and that is a very good thing." 1. How many kinds of yoga are there?
2. Is it popular?
3. Where?
4. Anywhere specific?
5. What kind?
6. Is it harder than normal yoga?
7. Is it good for you?
8. Who teaches it?
9. Is it expensive?
10. What does it cost?
11. Who does he teach?
12. Is he good at it?
13. Says who?
14. Who is he?
15. Of?
16. Where does he teach?
17. What does he teach in?
18. Are the kids interested?
19. Does Harish have any other jobs?
20. What
numbered_answers: 1. Many.
2. Yes.
3. All around the world?
4. India.
5. Water yoga.
6. Yes.
7. Yes.
8. Harish.
9. No.
10. Nothing.
11. Children, mainly.
12. Yes.
13. Sudhir.
14. A student.
15. Water yoga.
16. A local sports room.
17. A swimming pool.
18. Yes.
19. Yes.
20. He's a lawyer.

input: Make use of the article to answer the questions. CHAPTER XIII

DORA, GRACE AND NELLIE

That Tad Sobber was in a thorough rage was easily to be seen. His eyes were full of hate and he looked ready to fly at Tom and tear him to pieces.

All of the boys expected to see a great fight, and some backed away from the landing, to give the contestants more room.

But before anything could be done Dick leaped to the front and barred the bully's further progress.

"Stop it, Sobber," he said quietly but firmly.

"Get out of my way, Dick Rover!" roared the bully. "This is none of your affair."

"Then I'll make it my affair," answered the eldest Rover boy. "You shall not attack my brother here."

"Don't worry, Dick--I can take care of him," put in Tom, undauntedly, and doubled up his fists. "Maybe he'd like to go down stairs again and smash some more dishes."

"Not when John Fly am carryin' dem," put in the colored waiter, who stood looking at the wreckage with a sober face. "I don't want no moah such knockovers, I don't!" And he shook his woolly head decidedly.

The noise had summoned numerous cadets to the scene, and now George Strong, the head teacher, appeared.

"What is the trouble here?" he demanded.

For the moment nobody answered him, and he gazed in wonderment at the broken dishes and the scattered food.

"Been a accident, sah," said John Fly. "Dat young gen'man dun fall down de stairs an' knock me ober, tray an' all, sah." 1. Was Tad in a good mood?
2. Who was he upset with?
3. What were the boys hoping to see?
4. Did they scoot in closer to get a better view?
5. Did Tad have a good reason to be angry?
6. What did Dick do?
7. Did he yell at Tad?
8. Who is Tom?
9. Who is John Fly?
10. Who interrupted the chaos?
11. What was his job?
12. was Tom afraid of Tad?
13. Was Dick the youngest brother?
14. Who answered George
15. Was he honest?
16. What is this chapter called?
17. Were any of them mentioned in this story?
numbered_answers:
1. no
2. Tom
3. a fight
4. no
5. no
6. Dick stopped the bully
7. no
8. the brother of Dick
9. a waiter
10. George Strong
11. head teacher
12. no
13. no
14. John Fly
15. no
16. DORA, GRACE AND NELLIE
17. no