单项选择题

What will be the result of designing the body of SAX-40 as tailless and triangular

A．This shape can make the airplane fly faster.
B．This shape can hold more passengers.
C．This shape can supply more power raising.
D．This shape can be flied easily.
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单项选择题
What can we infer from the saying There's no one thing you can do ( Line 2, Para. 2 )
A．People can do nothing about silencing the noise of airplanes.
B．There are toe many things to be considered when people make planed quiet.
C．People have to deal with everything that causes the noise of airplanes.
D．Only one thing needs to be done when people silence the noise of airplanes.
单项选择题
What will be achieved by the design of SAX 40
A．The noise SAX-40 made cannot be heard at take off.
B．The noise SAX-40 made cannot be heard during landings.
C．The noise SAX-40 made during landings will decrease sharply.
D．The noise SAX-40 made at takeoff will decrease sharply.
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