Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Mary picked up a pencil and a piece of paper,saying,"Now,you want to earn money for the autumn camping trip,right?" Tom,her brother,nodded.He wasn't able to go last year because he hadn't earned enough money during the summer.This year he came up with a plan. He made a necklace for his mother that everyone admired.They were surprised to learn that Tom had made it for her.Why not make more necklaces and sell them? "OK," said Mary,"The first thing you need to do is to figure out how much you have now.'' "I have $20.00 in the bank,and $7.25 in my room," explained Tom. "That gives you a total of $27.25," said Mary,"That is called your capital.The next thing you need to know is how much it will cost you to make each necklace." "Well,the pet shop will give me all the feathers the birds lose.I'll have to buy the beads and string," said Tom. Mary wrote on the piece of paper: CAPITAL $27.25 EXPENSES Feathers no cost String for 10 necklaces $ 2.50 Beads for 10 necklaces _ Total $ 17.50 "How much do you think you can sell such a necklace for?" asked Mary. "Hmm," Tom looked thoughtful and said,"There's a shop in town that sells almost the same kind of necklace for $ 7.50.If I charge $ 6.00,people will think that's a _ ." "OK.If you sell each necklace for $ 6.00,you'll make a good profit on each then," said Mary. "Hurray!" Tom cried,"If I sell 20 necklaces,I'll have enough from the profit for the camping trip and $10.00 left over." Options: A $ 47.45. B $ 75. C $ 85. D $102.25. Answer: B $ 75. Question:
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The answer is:
How much would Tom have to spend on the camping trip?

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Beijing is the capital of China. It is also one of the birthplaces of the Chinese civilization and one of the six ancient capital cities in China. It is the second biggest city with an area of 17,020 square kilometers. Beijing is changing every day and it is becoming more and more beautiful. Now there are a lot of new buildings, modern shopping malls and large markets. In the past, Beijing was very clean and quiet and most people went to work or school by bike. Things have changed a lot. Now people can take the bus, the underground or the taxi to go to work or school. It is fast and convenient. The changes in Beijing have brought many advantages but they have also caused some problems: air pollution, noise pollution, sandstorms and lots of traffic. Options: A four B five C six D seven Answer: A four Question:
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The answer is:
How many kinds of problems are mentioned in this passage?

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: What Is Self-tracking All about Perhaps you've tracked how many kilometers you've run, how many hours you've slept or how much you've eaten in a day. If so, you've taken part in a popular movement called the "Quantified Self Movement" or "Self-tracking". Maybe you've wanted to change a bad habit but couldn't. Self-tracking may be your answer. The idea is to collect information about your everyday activities and analyze them to help improve and form a healthier lifestyle. Recently, tools such as smartphones, apps, along with newly published wearable things, are making self-tracking easy. Today, one can use Fitbit, the Jawbone Up, Google Glass or a smart watch to record personal data including sleeping hours, stress levels, heart rate and mood. So why does a person self-track? Someone may be trying to lose weight or improve their sleep. Another person feels tired after eating. Self-tracking could help him to know what foods make him sleepy and watch his diet. [:Z#xx#k.Com] Tracking daily activities isn't a new concept. In years past, athletes and their coaches kept notes food, training and sleep in order to achieve an athletic goal. Similarly, doctors have also helped patients to record parts of their lifestyles and eating habits to help fight health problems. However, it wasn't until 2007 that magazine writers Gary Wolf and Kim Kelly created the term "Quantified Self" or "self-tracking". Although self-tracking has many advantages, Dennis Nash, president of Data Speaks Health Solutions, says self-tracking has its disadvantages. Once people start tracking their daily activities, it can become an extra task people like to do often. Also, they might begin to worry too much about their health. Though self-tracking doesn't make sure that one's quality of life will improve, it can encourage people to make healthier choices. Options: A it watches your eating habits B it increases your movement C it records how many kilometers you run every day D it collects personal data and leads to self- improvement Answer: D it collects personal data and leads to self- improvement Question:
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The answer is:
People choose self-tracking because _ .