题目内容:
WhydidLondonbegintobuildundergroundrailways? A.BecauseQueenVictoriaorderedpeopletobuildthem.
B.BecausepeopleinLondonwantedtotakeunderground.
C.Becausethecongestedtrafficcouldnotmeetpeople'sneeds.
D.Becauseinvestorneededtofindnewwaystomakemoney.
参考答案:
答案解析: