题目：
SUPPLEMENTARY INSTRUCTIONS1. Calculations and workings need only be made to the nearest RMB.2. All apportionments should be made to the nearest month.3. All workings should be shown.TAX RATES AND ALLOWANCESThe following tax rates and allowances are to be used in answering the questions.
ALL FIVE questions are compulsory and MUST be attempted
答案：
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（1）有利自然条件：光照充足，夏季热量条 件好；平原地形，地势平坦；土壤肥沃；有黄河提供灌溉水源。（2）兰新线；陇海线（3）相同点：汛期主要在夏季；流速较快，水能资源丰富。不同点：结冰期：①河流附近有...
