IV. Vocabulary Cultivation for CET-4.Part 2 Word Bank: fill the blank in each sentence with the words or phrases given below. Write the corresponding letter in the blank. 5*2'Imagine you enter a car with no steering wheel, no brake or accelerator pedals (踏板). Under a voice-activated command, you say an address. “The fastest route will take us 15.3 minutes. Should I take it?” You say “yes” and you are on your way. The car 1._______  and starts moving all by itself. All you have to do is sit back and relax. A new technology has the 2._______ to change modern society in radical ways. There’s no QUESTION that self-driving vehicles could be an enormous benefit. The potential for safer cars means accident statistics would drop: some 94% of road accidents in the U.S. 3. _______ human error. Maintaining safe speeds and being electric, self-driving cars would drastically 4._______ pollution levels and dependency on non-renewable fuels. Roads would be quieter, people safer. But we must also consider the impact of the new technology on those who now 5._______ on driving for their livelihoods. Progress can’t be one-sided. It is necessary for the companies involved to consider the ethical consequences of these potential changes to build a better future for all.