Q: Write a multi-choice question for the following article, with the given choices and answer: Article: Besides giving off gases and dusts into the air, humans produce waste that is poured on the environment. Often, this waste produced by major industries and people is harmful to both nature and human life. One of the main causes of the large amount of dangerous waste is that people do not realize how large a problem it is. Because it can be simply removed and sent to a landfill ,the problem is often believed to end there. In addition, industries have often shown an unwillingness to find ways to deal with dangerous waste because of the related expenses. Many industries and governments build simple landfills to store waste, and often just pour waste chemicals into nearby bodies of water. Often, chemicals used for industrial production cause dangerous forms of waste.The amount of these chemicals has increased greatly in the past, but it is often difficult and expensive to get rid of these chemicals or to store them in a way safe to human life and the environment. Every year, major health problems result from dangerous waste. Sadly, it is often only after someone has died or become seriously ill that governments will take measures to reduce levels of harmful waste. Some governments have realized how serious the dangerous waste problem is and are now trying to settle this problem. They are also trying to limit the amount of waste industries are allowed to produce. Not only governments but ordinary people as well must work together to solve the problem. They can choose not to buy those products which require the production of dangerous waste, and produce less harmful waste themselves. Many scientists think that waste production can be cut. The waste can be reduced by at least one third using existing technologies and methods. Options: A do not produce harmful waste in their daily life B do not know where to place the dangerous waste C are not clear about how serious the dangerouswaste problem is D are not sure about where harmful waste ends Answer: C are not clear about how serious the dangerouswaste problem is Question:
A: According to the text, people _ .

Question: Write a multi-choice question for the following article, with the given choices and answer: Article: A new study by the Pew Research Center shows that the number of dads who choose to stay home and care for their children and families has quadrupled over the past 25 years. Can social and economic factors explain the change? Make no mistake; _ . In fact, they are only 16% of all stay-at-home parents.but that number is up from 10% since 1989. When pew started analyzing data. The steady growth since then suggests that these numbers represent a growing trend. "It's up from 1.1 million to 2 million," says Gretchen Livingston, one of the study authors. " More significantly, the number of man who say they stay at home specially to take care of their home and children is at an all-time high, more than four times the rate of fathers who gave that same answer in 1989." As women have taken on more high-paying careers, the assumption that they'll stay home with the children has become less automatic. "My wife and I were earning about the same income at the time just after our daughter was born. We felt that if someone was going to raise our children it would have to be one of us," says Al Watts, the president of the national At-Home Dad Network. "My wife was promoted shortly after she got back from maternity leave and that rise in pay would allow us to live on one income." In 1989, 10% of fathers were stay-at-home parents. In 2014, 16% are. Fourteen percent of the fathers without a high school diploma stay at home, compared to 3% of those with a college degree. In 1989, more than half (56%) of dads who stayed at home cited illness or disability ass the top reason. Thirty-five percent cite that reason now. Only 5% of stay-at-home dads in 1989 said caring for family was the main reason for staying at home. Now, that number is 21%. The rise in stay-at-home dads coincides with a change in social and economic trends regarding women in the workforce, says Farnoosh Torabi, author of When She Makes More. "We know that before they even get married, women are out-earning and out-earning men," she says, noting that younger... Options: A the terrible economic environment B the rise in women's economic status C the ever-increasing cost of raising children D the change of men's attitude towards family Answer: B the rise in women's economic status Question:
Answer: In Farnoosh Torabi's opinion, the rise in stay-at-home dads results from _ .

Question: Write a multi-choice question for the following article, with the given choices and answer: Article: However wealthy we may be, we can never find enough hours in the day to do everything we want. Economics deals with this problem through the concept of opportunity cost, which simply refers to whether someone's time or money could be better spent on something else. Every hour of our time has a value. For every hour we work at one job we could quite easily be doing another, or be sleeping or watching a film. Each of these options has a different opportunity cost--namely, what they cost us in missed opportunities. Say you intend to watch a football match but the tickets are expensive and it will take you a couple of hours to get to and from the stadium. Why not, you might reason, watch the game from home and use the _ money and _ to have dinner with friends? This--the alternative use of your cash and time--is the opportunity cost. For economists, every decision is made by knowledge of what one must forgo--in terms of money and enjoyment--in order to take it up. By knowing precisely what you are receiving and what you are missing out on, you ought to be able to make better-informed, more reasonable decisions. Consider that most famous economic rule of all: there's no such thing as a free lunch. Even if someone offers to take you out to lunch for free, the time you will spend in the restaurant still costs you something in terms of forgone opportunities. Some people find the idea of opportunity cost extremely discouraging: imagine spending your entire life calculating whether your time would be better spent elsewhere doing something more profitable or enjoyable. Yet, in a sense it's human nature to do precisely that--we assess the advantages and disadvantages of decisions all the time. In the business world, a popular phrase is "value for money." People want their cash to go as far as possible. However, another is fast obtaining an advantage: "value for time." The biggest restriction on our resources is the number of hours we can devote to something, so we look to maximize the return we get on our investment of... Options: A making more money B taking more opportunities C reducing missed opportunities D weighing the choice of opportunities Answer: D weighing the choice of opportunities Question:
Answer:
According to the passage, the concept of "opportunity cost" is applied to _ .