input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: When will a plant be considered a weed? Experts have a simple answer: when the undesirable qualities outweigh (,) the good qualities. Crops generally produce several hundred seeds from each plant. By comparison, each weed plant can produce tens or even hundreds of thousands of seeds. And some buried seeds can survive up to forty years or even longer. Eradicating weeds means that you have to remove all the seeds and roots so the weeds will die completely. But birds or the wind can reintroduce them to the land. A common way to deal with weeds is to control them enough so that the land can be used for planting. Experts suggest using more methods to deal with weeds. Chemical weed killers or natural treatments like corn gluten can suppress weed growth. Bill Curran is a professor of weed science. He says the most efficient method for suppressing weeds is dense planting. Dense planting of a crop can also act as a natural control. A dense and competitive crop that quickly shades the soil will help suppress many weeds. The weed seeds need light to grow, so cutting off sunlight will reduce weed growth. Other controls include turning over the soil, pulling the weeds or covering them with mulch made of wood, garden waste or other materials. But even mulch has its limits. Natural resource specialists point out that weeds can be transported in mulch. This is also true of soil, grain, hay and animals. Yet animals like sheep or goats eat weeds, so they can provide a biological control. Insects and other organisms can also act as biological controls. Preventing the spread of weeds is an important part of weed management. Farm vehicles should be kept out of areas with weeds. If that is not possible, then clean off the equipment and your shoes when leaving. Some people bum weeds or bury them deep. Experts say the economical way is to make organically rich compost . On the one hand, the process produces heat which can kill many weed seeds. On the other hand, the compost can be added to the soil to help plants grow. Options: A Chemical weed killers. B Putting the com gluten in the field. C Dense planting. D Making use of mulch. Answer: C Dense planting. Question:
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output: Which of the following methods of eradicating weeds can work best?

Please answer this: Write a multi-choice question for the following article, with the given choices and answer: Article: My students often tell me that they do not have "enough time" to do all their homework. My response often is "You have as much time as the president." I usually carry on a bit about there being twenty-four hours in the day for everyone, and suggest that "not enough time" is not an acceptable explanation of not getting something done. Once in graduate school, I tried to prove to my professor that I was working hard. His answer was "That's irrelevant .What's important is the quality of your work." That led me to a new idea: the quality of the work, which is perhaps best explained in a sign: "Don't work harder. Work smarter." If you can't get more time, as few of us can, the only solution is to improve the quality of your work. That means improving ways to get more out of the same time. That should lead us to an analysis of our work habits, which for students should be read as "study habits". Then as a smart student, you will seek to improve those skills that you use in study, chiefly reading and writing. If you can, it will pay off in all your subjects. As to improving reading, one suggestion is to take a quick nap when you feel reading puts you to sleep, which later helps you read better. The second solution is to speed up. But there are other issues. First, you need to find a place where you can work without unnecessary disturbances. Second, you need to take control. Success depends on realizing that you have to take active control over what you are doing. Third, you might as well get hold of a good book on reading and master the reading skills that pay off in all your classes. Talking about advice on good writing habits, you simply have to master the writing skills. Increasing your efficiency in both reading and writing will pay off immediately in terms of the quality of your work and in terms of the time spent doing it. Then you will be able to do better work in less time. And maybe you will find time to play golf with the president. Options: A they lack good learning habits B they only have 24 hours a day C they feel sleepy while reading D they are not good at writing Answer: A they lack good learning habits Question:
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Answer: According to the author, the students do not have enough time to get their work done mainly because _ .

Problem: Write a multi-choice question for the following article, with the given choices and answer: Article: I have been in England three months now. I hope you don't think I've forgotten you. There have been so many places to see and so many things to do that I've not had much time for writing letters. I shall soon be starting my studies at King's College.So far I've been learning about England and British ways of living.I won't tell you about London.There are lots of books you can read and lots of pictures you can look at about this famous city.I'm sure you'll be more interested to know what I think about life here. I find some of the customs interesting.People here do not shake hands as much as we do in the mainland of Europe. During the first few weeks I was often surprised because people did not put out their hands when I met them.Men raise their hats to women but not to each other. Options: A she had forgotten her friend B she was lonely and sad in this strange land C she was too busy to write D she was too busy with her courses at King's College Answer: C she was too busy to write Question:

A: The writer did not write the letter earlier because _ .

input question: Write a multi-choice question for the following article, with the given choices and answer: Article: A year ago, at the annual pre-Grammy party, Whitney Houston, the great star, walked on stage and closed the evening with a brilliant performance. Last Saturday, Houston was once again the focus before the Grammy, but her presence was a regrettable one.Earlier that day, the pop music's former queen was found dead in her hotel room.She was 48.This, no doubt, is sad news to the whole music industry and her fans all over the world. At her peak , Houston was the golden girl of the music world.From the mid-1980s to the late 1990s, she was one of the world's best-selling artists.She impressed audiences with her effortless, powerful and _ performance. Besides multi-million record sales, Houston made countless hits such as The Greatest Love of All, I Have Nothing, and the mostly famous I Will Always Love You.She also influenced a generation of younger singers, from Christina Aguilera to Mariah Carey. But by the end of her career, there was a shocking fall for this superstar.Houston had been addicted to drugs.Her album sales declined and the hits stopped coming and her once beautiful voice became hoarse , unable to hit the high notes as she used to. In 2009, Houston staged a successful comeback with the albumI Look To You, which fell on top of the charts.But hoarse voice, canceled concerts, and continuous illness-Houston's comeback trail wasn't smooth at all.In an interview with Oprah Winfrey in 2009, Houston admitted: "It (show business) is too much for me and I wanted out." Now that Houston has finally taken a break from all the chaos , may she rest in peace. Options: A her album sales declined B show business was too much for her C her fans no longer love her D she had been addicted to drugs Answer: D she had been addicted to drugs Question:???
output answer:
The cause of the fall of Whitney Houston was that _ .