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two B. four C. six D. eight C (Section B 3aSelf Check) ( ) 2. Driving will be safer when we use this kind of car in 10 years because _____. A. it will sense danger on the road B. people will walk out without cars C. there are fewer cars in the future D. the car will control itself when necessary D (Section B 3aSelf Check) ( ) 3. The robot assistant will begin to work in the neighborhood clinic in _____next year. A. Beijing B. Shanghai C. Guangdong D. Wuhan C (Section B 3aSelf Check) ( ) 4. A fishing ground’s radar equipment is to _____.