B 30 min Now listen to the whole report.Finish the exercises 1.Problems caused by too many private cars a.not energy efficient b.aggravating pollution c.increasing traffic snarls d.increasing economic costs 2.Solutions suggested by specialists: Providing better public transportation systems to lure people away from driving 3.Comparison between bus systems and new systems. Bus systems New systems underground railway） Advantages and Most efficient Too expensive disadvantages Fastest Low return to implement investors/ Low-cost governmentsB Now listen to the whole report. Finish the exercises. 1. Problems caused by too many private cars: a. not energy efficient b. aggravating pollution c. increasing traffic snarls d. increasing economic costs 2. Solutions suggested by specialists: Providing better public transportation systems, to lure people away from driving 3. Comparison between bus systems and new systems. Bus systems New systems (underground railway) Advantages and disadvantages Most efficient Fastest to implement Low-cost Too expensive Low return to investors/ governments 30 min