Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: You've heard of 3D printing from newspaper and TV programs. It can "print" in plastic, metal, nylon, and over a hundred other materials. 3D printing technology has been around since the 1980s, it was not widely used until the early 2010s. The first working 3D printer was created in 1984 by Chuck Hull. 3D printers use many different types of technologies, but they all share one thing in common: they create a three-dimensional object by building it layer , by continuing layer, until the whole object is completed. Imagine a baker lay down each layer one at a time until the whole cake is formed. 3D printing is somewhat similar, but just a bit stricter. How can 3D printers work so well? The most important thing-a program, a 3D printer also needs to have instructions for what to print from a computer. It needs a file as well. The file which is a Computer Aided Design (CAD) paper is created with the use of a 3D modeling program. The program creates a paper that is sent to the 3D printer. Along the way, software pieces the design into hundreds, or more likely thousands of layers. The 3D printer builds up one layer at a time, from the bottom to the top, until the object is done. 3D printings can be used for making many kinds of things such as machine parts, daily life objects, even human organs using a person's own cells. Nowadays, Marc. Dillon founds a project which deals with many world famous paintings like Leonardo da Vinci's Mona Lisa, Van Gogh's Sunflower with 3D technology. This project helps the blind people enjoy the fantastic art through touching. In order to provide a good user experience, these 3D paintings have special instruments which can tell people what they touch. Options: A CAD paper B Machine parts. C The world famous paintings D Special instruments Answer: D Special instruments Question:
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The answer is:
According to the passage, _ can help the blind know what they touch.

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Mr. and Mrs. Green were going on their vacation with their children, and they had to arrive at the airport before 11:40 the next morning. "It takes us thirty minutes to get there in a car," Mr. Green said, "so we must get ready before eleven o'clock. Don't be late." At ten fifty, all of them were busy doing something, but Mrs. Green wasn't. She sat quietly in a chair in the garden and enjoyed the good weather. Mr. Green and the children were surprised, but Mrs. Green said, "Don't worry! Before I went to bed last night. I made all our clocks and watches twenty minutes ahead . Now we can get to the airport early." Options: A Because they were going to a party. B Because they didn't go to the airport. C Because they had to go to the airport by bus. D Because they must arrive at the airport before 11:40. Answer: D Because they must arrive at the airport before 11:40. Question:
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The answer is:
Why did the Greens have to be ready before eleven o'clock?

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Everyone wants to be healthy. Then do you know how to keep in good health? You may say, "Having a balanced diet and doing exercise can help us." I agree with you. _ 1 In fact, good sleep is also very important. Lots of people in the world have sleep problems. They can't sleep well at night. _ They are unhappy and stressed out. Then they may have some other health problems. _ 2 _ How can people sleep well at night? Here are some good ideas. _ 3 _ * Sleep in a quiet room. * Do some exercise before going to bed. It'll make you sleepy . * Wash your feet in warm water before you go to bed. * Have a glass of milk. It's pretty good for sleeping. * Don't think about boring things. _ 4Try to be relaxed. Options: A 1 B 2 C 3 D 4 Answer: B 2 Question:
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The answer is:
We can put "For example, heart disease and headaches." in _ .