Lesson one Text A Vocabulary Practice --Blank-filling Fill in the blank with words or expressions given below aerodynamics depressurization lift convert fuselage avionics accelerate fatigue autonomous flaw catastrophic supersonic 1) The new trainers have a modern cockpit environment of digital displays, sophisticated navigation and advanced _______1____ 2) The new metal structures were lighter and stronger than the old materials. With the use of these new materials came new problems like ______2_____, cracking and corrosion 腐蚀 3) The first Comet commercial jet disintegrated in the air was partly caused by its design ______3_ 4) The Concorde is one of the most successful ______4__passenger airliners to have ever operated commercially with many advanced abilities 5) ____5_____is the central part of the aircraft designed to accommodate (容纳) the crew, the passengers and the cargo (货物) 6) Cabin _____6___above 10000feet may lead to unconsciousness or severe performance of degradation of the aircrew, therefore, it requires an emergency descent to a safety altitude. 7) Taking off without snow and ice removed may cause the loss of ____7_and airplane crash. 8) After World War II a lot of heavy bombers were ___8_____into commercial aircraft, which accelerated the growth of commercial aviation. 9) Failure to recognize the importance of aviation weather and standard procedures could potentially lead to _____9___incidents and accidents. 10) In the 21century, the development of military aircraft has focused on __10_____ aircraft which are unmanned and remotely controlled by the computer. 11) After receiving takeoff clearance, the pilot advances the throttle and then the plane _____11___ on the runway. 12) ____12___ is one of the major areas of study for a trainee pilot, which can help them have a better understanding of the forces working on an aircraft in flight.