Please answer this: Write a multi-choice question for the following article, with the given choices and answer: Article: Some years ago industries had more freedom than they have now, and they did not need to be as careful as they must today. They did not need to worry a lot about the safety of the new products that they developed. They did not have to pay much attention to the health and safety of the people who worked for them. Often new products were dangerous for the people who used them; often conditions in the work place had very bad effects on the health of the workers. Of course sometimes there were real disasters which attracted the attention of governments and which showed the need for changes. Also scientists who were doing research into the health of workers sometimes produced information which governments could not ignore. At such times, they inquire into the causes of the disasters or the problems. New safety rules were often introduced as a result of these inquiries; however. the new rules came too late to protect the people who died or who became seriously ill. Today many governments have special departments which protect customers and workers.In the U.S, for example, there is a department which tests new airplanes and gives warnings about possible problems. It also makes the rules that aircraft producers must follow. Another department controls the foods and drugs that companies sell. A third department looks at the places where people work. and then reports any companies that are breaking the laws which protect the health and safety of workers. Of course, new government departments and new laws cannot prevent every accident or illness. but they are having some good results. Our work places are safer and cleaner than before. The planes and cars which we use for travel are better. Producers are thinking more about the safety and health of the people who buy and use their products. Options: A conditions in the work place B the freedom of industries in the past C changes in industrial production D the safety and health of workers and customers Answer: D the safety and health of workers and customers Question:
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Answer: The main topic of the passage is _ .

Problem: Write a multi-choice question for the following article, with the given choices and answer: Article: As more people use smart phones to pay bills and store personal information, strict password security has become more important than ever. A new study shows that free - form gestures - sweeping fingers in shapes across the screen of a smart phone--can be used to unlock phones. These gestures are less likely to be observed and reproduced by others than traditional typed passwords. "All that it takes to steal a password is a quick eye," said one of the researchers of the study. "With all the personal information we have on our phones today, improving their security is becoming increasingly necessary." In developing a secure solution to this problem, the researchers studied the practicality of using free - form gestures. With the ability to create any shape in any size and location on the screen, the gestures were popular as passwords. Since users create them without following a template, the researchers predicted these gestures would allow for greater complexity. The researchers carried out a create - test - retest experiment where 63 people were asked to create a gesture, recall it, and recall it again 10 days later. The gestures were captured on a recognizer system designed by the team. Using this data, they tested the complexity and accuracy of each gesture using information theory. The result of their analysis is that people are favorable to use free - form gestures as passwords. To put their analysis into practice, the researchers then had seven students in computer science and engineering, each with considerable experience with touchscreens , attempt to steal a free - form gesture password by observing a phone user secretly. None of them were able to copy the gestures with enough accuracy. The gestures appear to be extremely powerful against attacks. Though the testing is in its early stage and widespread adaptation of this technology is not yet clear, the research team plans to continue to analyze the security and management of free - form passwords in the future. They believe this is the first study to... Options: A advise people to use free - form gestures B discuss whether smart phones are safe C talk about the practicality of passwords D introduce the study of a new password Answer: D introduce the study of a new password Question:

A: The main purpose of the text is to _ .

Q: Write a multi-choice question for the following article, with the given choices and answer: Article: John H. Johnson was born in a black family in Arkansas City in 1918. His father died in an accident when John was six . He was reaching high school age , but his hometown offered no high school for blacks . Fortunately he had a strong -- willed , caring mother . John remembers that his mother told him many times , "Son , you can be anything you really want to be if you just believe ." She told him not to be dependent on others , including his mother . "You have to earn success," said she . "All the people who work hard don't succeed , but the only people who do succeed are those who work hard ." These words came from a woman with less than a third --grade education .She worked hard as a cook for two years to save enough money to take her son -- then 15--to Chicago . Chicago in 1933 was not the promised land that black southerners were looking for . John's mother and stepfather could not find work . But here John could go to school , and here he learned the power of words -- as an editor of the newspaper at Du Sable High School . His wish was to publish a magazine for the blacks . While others discouraged him , John's mother offered him more words to live by : " _ " She also let him pawn her furniture to get the $500 he needed to start the Negro magazine . It is natural the difficulties and failures followed John closely until he became very successful . He always keeps his mother's words in mind: "Son , failure is not in your vocabulary ." Now John H. Johnson is one of the 400 richest people in America . Options: A John's father died in his hometown when John was very young B life was too hard for them to stay on in their hometown , while life in Chicago would be better for them Negroes C there were no schools in their hometown D John needed more education and he could go to high school there Answer: D John needed more education and he could go to high school there Question:
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Why did John's mother decide to move to Chicago ? Because _ .