Problem: Write a multi-choice question for the following article, with the given choices and answer: Article: In the Central Valley of California, famers are reducing crop size because they do not have enough water. Last year, California had the least amount of rain since officials began keeping records. And it may be just as bad this year. Reservoirs are areas where water is stored. In California, some reservoirs are empty. The amount of snow in the Sierra Mountains is 75 percent below normal. This mountain snow melts in the spring and fills rivers. The water is used by farmers. But now, farmers are warning of the possibility of another "Dust Bowl", like the one of 1930s. Severe droughts and dust storms covered American farmlands and few crops grew. Dan Errotabere is a third generation California farmer. He grows tomatoes, walnuts, garlic and other crops in Fresno County. He says the federal agency that controls the amount of water released from dams and rivers has stopped giving him water. He and other farmers say officials are not correctly administering the water system. "The last couple of years-dry years, along with severe environmental restrictions--has now presented us with a zero allocation year", said he. Farmer may not be able to plant crops on more than 200,000 hectares of farmland in the Central Valley this spring. Mr. Errotabere will plant crops on just 80 percent of this farmland. He has enough work for only 15 of his 25 workers. Federal and state officials sometimes reduce the amount of water to farmers even in years with normal rainfall levels. The officials must supply water to the Sacramento River Delta which is home to several endangered species. Long-term solutions include conservation, recycling waste water and, building "desalinization enters". These center remove salt from seawater so _ can be used on farms. Farmers say better administration of the state's water system could also help solve the crisis. Options: A He isn't content with the officials of water system. B He can do nothing but ask for help from the government. C He has to employ more workers to work for him. D He plans to cut down the majority of his crops. Answer: A He isn't content with the officials of water system. Question:

A: What do we know about Dan Errotabere?

Problem: Write a multi-choice question for the following article, with the given choices and answer: Article: Flight Distance Any observant people have noticed that a wild animal will allow a man or other potential enemy to approach only up to a given distance before it escapes. "Flight distance" is the terms used for this interspecies spacing. As a general rule, there is a positive relationship between the size of an animal and its flight distance --- the larger the animal, the greater the distance it must keep between itself and the enemy. An antelope will escape when the enemy is as much as five hundred yards away. The wall lizard's flight distance, on the other hand, is about six feet. Flight is the basic means of survival for mobile creatures. Critical Distance Critical distance apparently is present wherever and whenever there is a flight reaction. "Critical distance" includes the narrow zone separating flight distance from attack distance. A lion in a zoo will flee from an approaching man until it meets a barrier that it cannot overcome. If the man continues the approach, he soon penetrates(,)the lion's critical distance, at which point the cornered lion turns back and begins slowly stalk the man. Social Distance Social animals need to stay in touch with each other. Loss of contact with the group can be fatal for a variety of reasons including exposure to enemies. Social distance is not simply the distance at which an animal will lose contact with his group --- that is, the distance at which it can no longer see, hear, or smell the group --- it is rather a psychological distance, one at which the animal apparently begins to feel anxious when it goes beyond its limits. We can think of it as a hidden band that contains the group. Social distance varies from species to species. It is quite short --- apparently only a few yards --- among some animals, and quite long among others. Social distance is not always rigidly fixed but is determined in part by the situation. When the young of apes and humans are mobile but not yet under control of the mother's voice, social distance may be the length of her reach. This is... Options: A Critical Distance B Spacing in Animals C Relationship Between Animals D Psychological Distance Answer: B Spacing in Animals Question:

A: Which of the following one can be the best title of the passage?

Problem: Write a multi-choice question for the following article, with the given choices and answer: Article: International students are allowed to work for the university they study at or for a business at the school. But the business must directly provide a service for students. You could work at the bookstore, for example, but not for a company that is building something at the school. Also, a foreign student cannot take the place of an American in a job. International students can work 20 hours a week while having classes; more during school breaks. You can work until you finish your studies. International students normally cannot take a job that has nothing to do with their school. But the government may give permission if students are suddenly faced with difficulties. Examples include large medical bills, the shortage of financial aid or an unexpected change in the financial support. Students must also meet other conditions . They must have studied at their American school for at least one year. Students must ask for permission again after a year if they want to continue an off-campus job. International students who will be studying at graduate school can apply for some jobs before they come to the United States. A good example is a university job like a teaching or research assistant. Some schools pay their assistants. Others provide free education in return. Many do both. Graduate assistants might teach, give tests, grade work, help with research and clean the offices. Many universities now provide language training for foreign teaching assistants to help them improve their English. Some schools ask foreign students to pass an English speaking test before they are allowed to teach. International student offices at schools have to provide information on students each term for the Department of Homeland Security. Students who _ visa rules -- for example, by working off-campus without permission -- could be sent home. Options: A The rules about getting a job while studying in the US for international students. B The reason why international students like studying in the United States. C What international students should do while working in the United States. D How international students could find jobs while studying in the US. Answer: A The rules about getting a job while studying in the US for international students. Question:

A:
What is the passage mainly about?