Question: Read the following article and answer the question. Article: Strange things happen when you travel, because the earth is divided into twenty-four zones. The time difference between two zones is one hour. You can have days with more than twenty-four hours and days with fewer than twenty- four hours. You can have weeks with more than seven days and weeks with fewer than seven days. If you make a five-trip across the Atlantic Ocean , your ship come into a different time zone every day. As you come into each zone, the time changes one hour. If you travel west, you set your watch back. If you travel east, you set it ahead. Each day of your trip has either twenty-five or twenty-three hours. If you make a trip by ship across the Pacific Ocean , you cross the International Date Line. This is the point where a new day begins when you cross the line, you change one full day. If you travel east, today becomes yesterday, if you travel west it is tomorrow. Question: Which of the following sentences is true? Answer:
If we travel around the world, we will get into trouble in telling the time.
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Read the following article and answer the question. Article: MEXICO CITY: A jetliner from the beach resort of Cancun was briefly hijacked as it landed in Mexico City on Wednesday. The hijackers released all passengers shortly before federal police stormed the plane, and the crew emerged unharmed moments later. Police, who did not fire a single shot, led as many as eight handcuffed men away from the airplane, which was isolated at the end of a runway in an area designed for emergencies. The hijackers' motive was unclear, though Mexican news media initially identified them as Bolivians demanding to speak with Mexican President Felipe Calderon. US, French and Mexican citizens were among the 112 passengers and crew on Aeromexico Flight 576, according to a US official who had been briefed on the situation. The official was not authorized to discuss the case and spoke on condition of anonymity. Mexico's transportation and communications secretary, Juan Molinar, said there was no bomb on the airplane, although some passengers said one of the hijackers held a package that resembled an explosive device, and a bomb squad   was later seen near the airplane. He did not immediately identify the hijackers or speculate on their motive. "Various people who participated in the act have been detained and we are investigating," Molinar said. The attorney general's office said it was opening an investigation into terrorism and kidnapping but did not specify how many people could be charged. Mexican news media initially reported the hijackers were Bolivian, but Bolivia's ambassador to Mexico, Jorge Mancilla, said Mexican authorities had no evidence that was the case. Mancilla said sources told him they could be Colombian or Venezuelan. Several passengers told reporters they did not notice a non-Mexican accent. Passenger Rocio Garcia told the Televisa network that the pilot made an announcement after landing in Mexico City that the airplane was being hijacked. Passengers said the hijackers never communicated with them directly. "These were scary moments," she said. She said she saw one of... Question: What may be the first step taken when the hijacked plane landed? Answer:
They kept the plane away from other planes.
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Read the following article and answer the question. Article: China Mobile, the country's largest mobile communications operator, has accounted for nearly 40 percent of revenues   in the domestic  telecoms market. That puts it at the top of the six major telecoms operators in the nation, according to the latest official statistics . The other five are: China Telecom, 31.1 percent; China Netcom, 16.6 percent; and China Unicom, 13.4 percent; China Satellite Communications Corp and China Rilcom, 1.5 percent.  Mobile communications and the IP phone business have gradually replaced traditional long-distance calls. Mobile communications account for 28.5 percent of the total long-distance communications business. IP phones have 41.4 percent, while traditional long-distance calls are down to 30.1 percent. In another ranking , Nokia, Motorola, Bird, TCL and Siemens came in as the top five mobile phone sellers in China in the first half of this year, according to South Daily. They report also says that during this period, prefix = st1 /Chinaproduced 82 million handsets (including GSM, GPRS and CDMA phones) and sold 80 million. Of the phones sold, 37 million were exported to other countries. Analysts point out that China's lack of key technologies and its heavy dependence on overseas technologies have proved to be an obstacle  for development of home-made phone makers. Question: Mobile communications have gradually taken the place of_. Answer:
traditional long-distance calls
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Read the following article and answer the question. Article: There are many rights to make sure that people will be treated fairly when they are suspected or accused of a crime. Sometimes these rights are called "due process of law". In using these rights, a person should have the help of a lawyer. You have a right to protect against unreasonable searches and seizures. The police generally may not search you or your home, or take things you own, without a "warrant". A warrant is a paper which states, very exactly, the place to be searched and the things to be taken. Sometimes, however, the police will not need a warrant to search you or your property. If an officer sees you committing a crime, or if he has a good reason to believe you have committed a serious crime, he may arrest you and search you and the area right around you without a warrant. If you invite a police without a warrant to come into your house and he finds proof of crime, the evidence may be used against you in court. If you do not want an officer to search you or your home and he does not have a warrant, tell him that you do not give him the right to search. However, if the officer will not listen, do not try to stop him. It is dangerous to resist and it may be illegal to do so. Any evidence which a policeman gets during an unlawful search and seizure cannot be used against you. Police officers must act reasonably and fairly at all times. They should use physical force only when it is needed to arrest someone to enforce a law. They may not use physical violence to "teach someone a lesson". Question: The passage centers around   _  . Answer:

Answer: the rights of citizens
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