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Article: Today anyone will accept money in exchange for goods and services. People use money to buy food, furniture, books, bicycles and hundreds of other things we need or want. When they work, they usually get paid in money. Lots of the money today is made of paper. But people used to use all kinds of things as money. One of the first kinds of money was shells. Shells were not the only things used as money. In China, cloth and knives were used. In the Philippine Islands, rice was used as money for a long time. Some Africans once used elephant tusks, monkey tails, and salt as money. The first metal coins were made in China. They were round and had a square hole in the center. Different countries have used different metals and designs for their money. Later, countries began to make coins of gold and silver. But even gold and silver were inconvenient if you had to buy something expensive. Again the Chinese thought of a way to improve money. They began to use paper money. The first paper money looked more like a note from one person to another than the paper money used today. Money has had an interesting history, from the days of shell money until today. Question: The first metal coins looked like _ . Yes or no, is the answer "round-shaped with a square hole in the middle"?
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No

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Article: "Look, my mum's in hospital, dying, she won't survive the night, I'm going to miss the connection to Leeds at Peterborough, I'd be grateful if you'd leave me alone.Okay?" "Okay," he said, finally getting up."Sorry to hear that, son.Hope you make it home in time." Then he left. Ten minutes later, he was back.Oh no, I thought, "here we go again".This time I really want to rag him down the train. He touched my arm."Listen, when we get to Peterborough, shoot straight over to Platform One as quick as you like.The Leeds train'll be there." I said, stupidly, "What do you mean? Is it late, or something?" "No, it isn't late," he said."No, I've just radioed Peterborough.They're going to hold the train up for you.As soon as you get on, it goes." " Everyone will be complaining about how late it is, but let' s not worry about that on this occasion.You'll get home and that's the main thing.Good luck and God bless. Then he was off down the train again. I chased him down the train.I wanted to give him all the things I had, but I knew he would be offended. I caught him up and grabbed his arm."Oh, er, I just wanted to..." I was suddenly speechless."I, if erm... "It's okay," he said."Not a problem. " I wish I had some way to thank you," I said." I appreciate what you've done." "Not a problem," he said again."If you feel the need to thank me, the next time you see someone in trouble, you help them out.That will pay me back enough.Tell them to pay you back the same way and soon the world will be a better place." I was at my mother's side when she died in the early hours of the morning. Question: Why was the author not in the mood for talking? Yes or no, is the answer "He was sad for fear of not being with his mother when she died."?
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No

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Article: After the "Big Bang ",the earth was just a cloud of energetic dust. What it was to become was a mystery until the dust began to slowly combine into a ball moving around the sun. The problem was that the earth became violent because it was not clear whether the solid shape was to last or not. It exploded loudly with fire and rock, which were in time to produce the water vapor, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earth's atmosphere. As the earth cooled down, water began to appear on its surface. Nobody knew that it was going to be different from other planets going round the sun. Water had already disappeared from planets like Mars or satellites like the moon, but it stayed on the earth. This is how the earth began to show its special qualities. Many people think that this was important for the beginning of life. It allowed the earth to dissolve harmful gases, which had become part of the earth's atmosphere, into the oceans and seas. That made it possible for life to begin to develop. What scientists think is that the earth was different because of the arrival of small plants growing in the water on its surface. Nobody understood that these plants were the start of many changes. They multiplied and filled the first oceans and seas with oxygen .This encouraged the development of early shellfish and all sorts of fish. Many millions of years later the first green plants began to appear on land. Scientists believe that taking carbon dioxide from the atmosphere and filling the air with oxygen helped life to develop. Later land animals appeared. Some were insects. Others, called amphibians, were able to live on land as well as in the sea. When the plants grew into forests, reptiles appeared for the first time. They produced young generally by laying eggs. Later, some huge animals, called dinosaurs, developed, They laid eggs too. They became the most important animals on the earth for millions of years. But when they disappeared, mammals became more important. They were the last... Question: What problem is caused by human beings? Yes or no, is the answer "They cause global warming."?
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Yes