We know from the third paragraph that______. A．L. A. has to focus on manufacturing more cars B．Garcetti is the youngest mayor in L. A. 's history C．traffic jam is one of the problems that L. A. faces D．Garcetti has already made the highways flowing
A. A．L. B.Garcetti C.traffic D.Garcetti
【参考答案】
C [A]项对应原文：Buildingatransportationinfrastructureissometh......