阅读理解Millionsofaircrafttakeoffaroun

阅读理解Millions of aircraft take off around the world every year. The skies they fly in seem limitless—miles of empty space. But, with the number of flights increasing each year, this emptiness no longer exists. Researchers in the world of aviation（航空）are worried about the increasing pressure on pilots and ground controllers. And increasing collisions, occurring at or near an airport, have called attention to the need for more aids（辅助设备）to aviation control. People who travel the skies are not certain about air safety. A great deal of money is spent on new and bigger aircraft and airports to deal with the vast increase in passengers travelling by air. Only a small percentage of this money is spent on navigation（导航）and other aids. Actually, suitable electronic equipment has long existed, and many panies market safety aids designed to make it safer for aircraft to take off, fly any distance, and land, whatever the weather. Yet, there are two problems to be solved. The first is to get governments, airlines and airport officials to agree to basic levels of safety aids. The second problem is to find a way of meeting these basic requirements. But no matter how well the equipment works, operators of the equipment still play an important role. Communications between pilots and ground controllers are extremely important to air safety. It is worth pointing out that the mishearing or misunderstanding of instructions in English and the use of another language, in an international conversation, have led to two recent aircraft accidents. A new type of instrument（仪器）called FLIGHTWATCH would help pilots prevent airport collisions. It would be particularly helpful near airports.1.The increasing number of flights leads to the fact that ________. A.flying is no longer limited in the skyB.there is no empty space for aids to aviation controlC.piloting and controlling planes is getting more difficultD.the pressure on the ground bees greater2.There is uncertainty about air safety because ________. A.planes bee bigger for the increasing number of passengersB.money spent on electronic equipment is far from enoughC.suitable electronic equipment hasn’t been invented yetD.it is dangerous for planes to take off or land3.The underlined word “collisions” probably means ________. A.accidents in which two planes hit each otherB.misunderstandings between pilots and ground controllersC.quarrels among passengers      D.breakdowns of new types of instrument4.It can be inferred from the passage that ________. A.governments and officials have paid great attention to air safetyB.there should be more panies to sell new safety aidsC.English should be used in an international conversationD.understanding between pilots and ground controllers should be improved