题目内容:
WhydoessouthLondonhavefewertunnelsthanotherpartsofLondon? A.Becausetherearefewerneighborhoodsbuiltonclay.
B.BecausetheclayofsouthLondonisdifficulttobuildtunnels.
C.Becausepeoplelivingtheredonotliketakingunderground.
D.Becausepeoplelivingtherecannotaffordtobuildmanytunnels.
参考答案:
答案解析: