单项选择题
A.depend on B.call on C.come on D.go on
GM envisions a system（）the Mobility Internet.A.callingB...
单项选择题GM envisions a system（）the Mobility Internet.
A.calling B.call C.calls D.called
The car will be guided by a differential GPS system tha...
单项选择题The car will be guided by a differential GPS system that corrects errors（）in global positioning satellite signals.
A.arising B.rise C.raise D.arouse
However, since methanol-fueled vehicles could be design...
单项选择题However, since methanol-fueled vehicles could be designed to be much more（）than gasoline clone vehicles fueled with methanol, they would need comparatively less fuel.
A.effective B.efficient C.sufficient D.supplement
