中国河流地域众多，情况复杂多变，古人因地制宜、就地取材、方能巧夺天工。

中国河流地域众多，情况复杂多变，古人因地制宜、就地取材、方能巧夺天工。
A.China has a multiplicity of complicated rivers and landforms, and the ancients took local conditions into account and used local resources to ensure a perfect addition to Nature.
B.China has a multiplicity of complicated rivers and landforms, and the ancients take effective measures according to local conditions and used local resources to ensure the superb craftsmanship excelling nature.
正确答案：China has a multiplicity of complicated rivers and landforms, and the ancients took local conditions into account and used local resources to ensure a perfect addition to Nature.