单项选择题
A.that; to travel B.which; travel C.where; travel D.that; travel
Second, the car needs()collisions.A.to be able to avoid...
单项选择题Second, the car needs()collisions.
A.to be able to avoid B.being able to avoid C.to be able to avoiding
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 arising in global positioning satellite signals()they travel through the ionosphere and troposphere.
A.as B.that C.what D.where
The TTS run will demonstrate ()the car can take curves ...
单项选择题The TTS run will demonstrate ()the car can take curves as fast as a human driver—without driving off a cliff.
A.as B.that C.when D.whether