Air traffic is undergoing big changes both in developed and developing countries. The demand for air traffic in the United States is expected to grow to 2 or 3 times the current levels of traffic in the next few decades. This paper models demand for air traffic as a network with several ...
指代“the+名词的单数形式/不可数名词”要用代词that。这里是指代前面的the death rate,故用代词that。故选B。 结果一 题目 【题目】In the United States, the death rate of air pollution is higher thanof traffic accidents.A. isB.thatC. thoseD. one 答案 【解析】【答案】B【核心词汇/短语】death ...
The primary purpose of ATC worldwide is to prevent collisions, organise and expedite the flow of traffic in the air, and provide information and other support for pilots.[1] 【参考译文】空中交通管制(ATC)是由地面空中交通管制员(人员)提供的服务,他们指挥飞机在地面上以及通过特定的受控空域段,并且...
traffic jams本义为“交通阻塞”,此处指空中飞机太多造成飞行困难。4.A【解析】推理判断题。由文章最后一句可知,在美国,不仅路面上的交通会越来越拥挤,空中的交通也出现了同样的情况。 结果一 题目 B In the United States, travel by air is much cheaper now than it was. There are many airlines that want...
of aircraft in the skies over the United States, which were becoming quite congested. The resulting structure of air traffic control has greatly increased the safety of flight in the United States, and similar air traffic control procedures are also in place over much of the rest of the world...
The resulting structure of air traffic control has greatly increased the safety of flight in the United States, and similar air traffic control procedures are also in place over much of the rest of the world.B Rudimentary air traffic control (ATC) existed well before the Grand Canyon disaster....
根据原文Thanksgiving, in November, and Christmas in December are now two very important family holidays.可知D正确,故选D。 根据原文More and more planes want to land and take off at the airports. There are often “traffic jams” in the sky. Accidents can easily happen. 可知在机场越来越多的...
16DMany people think that ATC consists of a row of controllers sitting in front of their radar screens at the nation's airports, telling arriving and departing traffic what to do.The FAA realised that the airspace over the United States would at any time have many different kinds of planes...
The resulting structure of air traffic control has greatly increased the safety of flight in the United States, and similar air trafficcontrol procedures are also in place over much of the rest of the world. BRudimentary air traffic control (ATC) existed well before the Grand Canyon disaster. ...