【单选题】The Turing machine is an abstract(71)of computer execution and storage introduced in 1936 by Alan Turing to give a mathematically precise definition of(72). or 'mechanical procedure'. As such it is st...
【单选题】Air Canada announced that on June 2,2005 it will introduce non-stop service between Toronto and Beijing, further building its main Toronto hub (中枢) with more non-stop flights to Asia and creating the ...
A.
There was no non-stop service between Canada and China mainland.
B.
People in our countries could fly to Canada from Beijing directly three years ago.
C.
More people will fly to Canada from China directly.
D.
Air Canada is increasing the capacity of goods transportation for the first time.