________（49）A.Experts say that we cannot do that
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________（49）
A.Experts say that we cannot do that just yet.
B.In the near future,intelligent cars will be put into commercial operation.
C.This is the brain of the car.
D.But how does an intelligent car control itself?
E.It completes the processing of the images sent by the cameras within 100 milliseconds.
F.However,it cannot recognize moving people and bicycles on ordinary roads that have no clear markings on them.
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答案：A
空格前句提出问题，因此空格处很可能出现对该问题进行回答的语句，因此排除F项（转折句）。剩下的选项中，选项A中的we与空格前句中的us呼应，而选项A中的代词that指代“let it have the wheel at any time and in any place．让它在任何时候、任何地点驾驶汽车”，因此A项是正确答案。