user: input with options: Read the following article and answer the question. Article: Your cell phone holds secrets about you. Besides the names and numbers that you've programmed into it, traces of your DNA remain on it, according to a new study. DNA is genetic material that appears in every cell. Like your fingerprint, your DNA is unique to you --- unless you have an identical twin. Scientists today usually analyze DNA in blood,saliva , or hair left behind at the scene of a crime. The results often help detectives identify criminals and their victims. Meghan J. McFadden, a biologist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cell phone and later dropped the device. This made her wonder whether traces of DNA remained on cell phones --- even when no blood was involved. To find out, she and a colleague collectedflip-style  phones from 10 volunteers. They collected invisible traces of the users from two parts of the phone: the outside, where the user holds it, and the speaker, which is placed at the user's ear. The scientists scrubbed(meaning "cleaned") the phones using a liquid mixture made mostly of alcohol. The aim of washing was to remove all detectable traces of DNA. The owners got their phones back for another week. Then the researchers collected the phones and repeated collecting traces on each phone once more. They discovered DNA that belonged to the phone's owner on each of the phones. Surprisingly, DNA showed up even in swabs that were taken immediately after the phones were cleaned. That suggests that washing won't remove all traces of evidence from a criminal's cell phone. So cell phones can now be added to the list of clues that can help a crime-scene investigation. Question: The scientists allowed the volunteers to keep their cell phones for a week in order to  _  . Answer:
OPTIONS:
- let them leave their traces on their phones
- avoid keeping their cell phones too long
- give them a chance to get rid of their secrets
- find out who is responsible for the crime
output: let them leave their traces on their phones

input with options: Read the following article and answer the question. Article: It is time for students to sell such things as chocolate bars and greeting cards to raise money for their school, class or club. It is _ that they will knock on your door and you will easily hand over your cash for overpriced items that you really do not want. That is okay, though, because there are many reasons why children should be allowed to raise money for their schools and clubs. Fundraising  is a great way to help children learn social skills. It is not easy to go up to a complete stranger and ask him for his money. They have to nicely ask for help, show the interested buyer what they have to offer and explain how it will help them in school. If someone refuses to buy an item, that child has to take the failure in stride , and that is a learning lesson as well. Students can learn how to deal with money by fundraising. Of course, it might seem safer for us to take charge of our children's earnings from their fundraising before it is turned into the school. However, by making them keep track of it, count it, and make sure everyone pays the right amount, they are learning an important lesson. Dealing with money is important to know about when they are older. Fundraising helps improve their schools. It is the children's school. They have to learn there and grow there. Why not let them help in making it a better place? Fundraising allows for more life experiences for the child. The raised money is used towards things like parties, trips, or for the music club to go to see a Broadway play. The children receive the rewards for their hard work at raising the money. Without fundraising, these field trips and special school memories would be missed. In a word, fundraising helps children a lot in many ways. Question: One of the important indications that children are grown up is that   _  . Answer:
OPTIONS:
- children can deal with money
- children learn to care for others
- children make a date with friends of the other sex
- children like to make up
output: children can deal with money

input with options: Read the following article and answer the question. Article: Green living has become more important than ever and as time goes by, it will only become a more important issue. While it used to be a matter of making an extra effort to save energy and reduce waste in our homes, this has extended to the professional side of things since. Public buildings, such as schools, hospitals and offices, are under an increasing amount of pressure to make the change and go green, even if it's just a step-by-step process that takes a few years to implement completely. There are plenty of reasons for offices to go green and these reasons go beyond the concept that it should be done just for the sake of the environment. While the environment is incredibly important and vital to our survival and quality of life, sustainable office design can also have positive impacts upon employees and people using the building. For example, a report carried out last September revealed that the way an office is designed can significantly impact on the health of the staff there. It was also found to have an effect on productivity and could be a contributory factor to the amount of sick leave and staff turnaround within the business. It's fascinating to think that people can be so sensitive to their environments but it also makes a lot of sense. Even the choice of colour in your office can negatively or positively affect the people working there.  Based on this study, it is clear that companies should be making more efforts to improve on the office design while making sure the environment is sustainable and green. There are various little changes that can be made to lead to something bigger, from making sure the lights are turned off at night to recycling the paper your company gets through on a weekly basis. Once these changes are in place, you can start looking at the bigger picture and begin implementing changes to design and construction, like having wood fibre insulation fitted. Along with other sustainable features, insulation can be beneficial in various ways. Not only will an insulated office... Question: What is the author's argument in the passage? Answer:
OPTIONS:
- Green living can help to save energy.
- Public buildings should go green.
- Green living still has a long way to go.
- It is important to lead a green life.
output:

assistant: Public buildings should go green.