You know that friction also causes heat. Think about when you rub your hands together. It is friction that makes them warm. But why does this happen? Friction causes the molecules on rubbing surfaces to move faster. Faster moving particles have more heat energy. Heat from friction can be useful. Can you think of other places where you might find friction? Friction also lets you light a match. Heat from friction can also cause problems. It can cause a car to overheat. To reduce friction, oil is added to the engine. Oil coats the surfaces of moving parts. This coating of oil makes them slippery. When things are slippery there is less friction. Have you ever seen a sign that says, slippery when wet? This too has to do with friction. Water, like oil, can reduce friction. The wet surface may allow your shoes to slide more easily.
What question would one ask from this paragraph?
Answer: Why do rubbing your hands make them warm?

Neighborhood Legal Services, which provides free legal services to the poor, has expanded into the San Gabriel and Pomona valleys, areas with large Asian populations, many of whom speak limited or no English. Language is their biggest obstacle, but the Asian communities' cultural isolation and service providers' lack of cultural expertise also play a part, said NLS executive director Neal Dubovitz. And with 13 percent to 15 percent of the Asian population in the U.S. living below the poverty line, NLS services are badly needed, Dubovitz said. "Although it is a significant part of the poverty population, Asians historically have not been able to participate in the services and programs available to the poor," he said. From simple telephone advice to complete legal representation in court, the agency provides free consumer, health, family, immigration, housing, public benefits and labor legal services to people who earn under $1,380 per month. Legal service providers have long served large Latino populations, who have cultural diversity but share a common language. "I remember the days when there were only a handful of people in the legal offices who spoke Spanish," Dudovitz said. "Now Spanish and English are interchangeable. Our goal is to have that for the major Asian languages as well." Before the expansion, only a few NLS lawyers spoke Asian languages, said attorney Rebecca Yee, who was hired by NLS in April 2002 to design and head the project. "Now we have people speaking Cantonese, Mandarin, Thai, Khmer (from Cambodia), Korean, Vietnamese, Japanese and Tagalog," Yee said. One of the 13 attorneys hired to work with the program is Irene Mak, a family law attorney who speaks Cantonese, Mandarin and Thai. Mak was a partner at a private law firm before she went to work for NLS two years ago, earning up to $20,000 less a year working on domestic violence cases. "The job is more satisfying than the money," said Mak, who grew up in Hong Kong and Thailand before coming to the United States. "I could use my language skills and wanted to give back to the Asian community." NLS expanded when Legal Services Corp., the federal agency that funds providers of free legal services nationwide, reduced the number of grantees in the Los Angeles area from five to three, Dudovitz said. NLS won the competitive grant over the Legal Services Program for Pasadena, San Gabriel-Pomona valleys. That boosted its client base from 16,000 to around 25,000, and NLS opened an office in El Monte.
What question would one ask from this paragraph?
Answer: What languages spoken by the different attorneys of Neighborhood Legal Services? Name three

Rolfe put down the little dog he had been holding, and went out into the hall. The dog accompanied him, frisking about him in friendly fashion. Rolfe first examined the bedroom that he had seen Inspector Chippenfield enter. It was a small room, containing a double bed. It was prettily furnished in white, with white curtains, and toilet-table articles in ivory to match. A glance round the room convinced Rolfe that it was impossible for a man to secrete himself in it. The door of the wardrobe had been flung open by the inspector, and the dresses and other articles of feminine apparel it contained flung out on the floor. There was no other hiding-place possible, except beneath the bed, and the ruthless hand of the inspector had torn off the white muslin bed hangings, revealing emptiness underneath. Rolfe went out into the hall again, and entered the room next the bedroom. This apartment was apparently used as a dining-room, for it contained a large table, a few chairs, a small sideboard, a spirit-stand, a case of books and ornaments, and two small oak presses. Plainly, there was no place in it where a man could hide himself. The next room was the bathroom, which was also empty. Opposite the bathroom was a small bedroom, very barely furnished, offering no possibility of concealment. Then the passage opened into a large roomy kitchen, the full width of the rooms on both sides of the hall, and the kitchen completed the flat.
What question would one ask from this paragraph?
Answer: How many bedrooms did Rolfe examine?

At 9:48, a representative from the White House shelter asked if there were any indications of another hijacked aircraft. The deputy director for operations mentioned the Delta flight and concluded that "that would be the fourth possible hijack." At 9:49, the commander of NORAD directed all air sovereignty aircraft to battle stations, fully armed. At 9:59, an Air Force lieutenant colonel working in the White House Military Office joined the conference and stated he had just talked to Deputy National Security Advisor Stephen Hadley. The White House requested (1) the implementation of continuity of government measures, (2) fighter escorts for Air Force One, and (3) a fighter combat air patrol over Washington, D.C. By 10:03, when United 93 crashed in Pennsylvania, there had been no mention of its hijacking and the FAA had not yet been added to the teleconference. The President and the Vice President The President was seated in a classroom when, at 9:05, Andrew Card whispered to him: "A second plane hit the second tower. America is under attack." The President told us his instinct was to project calm, not to have the country see an excited reaction at a moment of crisis. The press was standing behind the children; he saw their phones and pagers start to ring. The President felt he should project strength and calm until he could better understand what was happening. The President remained in the classroom for another five to seven minutes, while the children continued reading. He then returned to a holding room shortly before 9:15, where he was briefed by staff and saw television coverage. He next spoke to Vice President Cheney, Dr. Rice, New York Governor George Pataki, and FBI Director Robert Mueller. He decided to make a brief statement from the school before leaving for the airport. The Secret Service told us they were anxious to move the President to a safer location, but did not think it imperative for him to run out the door. Between 9:15 and 9:30, the staff was busy arranging a return to Washington, while the President consulted his senior advisers about his remarks. No one in the traveling party had any information during this time that other aircraft were hijacked or missing. Staff was in contact with the White House Situation Room, but as far as we could determine, no one with the President was in contact with the Pentagon.
What question would one ask from this paragraph?
Answer:
What commander is able to direct all airs sovereignty aircrafts