【题目】阅读下列材料，回答问题。
材料一 和硕县位于天山南麓，焉耆盆地东北部，年总日照时数为2 990小时，无霜期平均210天，年均温11.4℃，年均降水量为58.6毫米。近年来随着市场需求的变化，和硕县开始实施“减白增红”策略，即减少棉花播种面积，增加西红柿、辣椒等红色农业经济作物，积极发展生态农业，大大增加了农民的收入……
材料二 2009年5月30日中新网新疆报道：新疆和硕县农民马玉民种了十多年棉花，他也许没有想到，原来怎么种植，棉花亩产量也只能达到150公斤左右，可是2008年，他的棉花亩产竟翻了一番，其法宝就是引进了优良品种和滴灌技术……
（1）试分析新疆和硕县发展农业生产的有利自然条件及主要的制约因素。
（2）近几年新疆和硕的特色农业种植规模日益扩大，试分析其有利的社会经济条件。
（3）和硕县农民的增产增收，主要得益于(双选)：（ ）
A．种植品种的改良
B．种植技术的改良
C．耕地规模的扩大
D．交通运输条件的改善
E．化肥农药的使用
F．机械化程度的提高
【答案】
(1)有利自然条件：光热充足；地形平坦；土壤肥沃；灌溉水源充足；主要的制约因素：气候干旱，降水少。
(2)交通运输条件逐步改善；市场需求量扩大；政府的政策支持；引进优良品种，实施滴灌技术
(3)AB
【解析】
试题分析：
（1）考查农业的区位因素。农业生产的自然条件主要有气候（光照、降水、热量）、地形、水源、土壤等方面，结合新疆和硕县的自然条件分析分析。据材料分析可知，该地光热充足；地形平坦；土壤肥沃；灌溉水源充足，有利于农业的发展；但气候干旱，降水稀少，是制约该地农业生产的主要因素。
（2）考查农业生产有利的社会经济条件。据材料分析，该地的交通条件逐步改善、产品质量优市场广阔、政府的政策大力支持、品种优良，且实施了滴灌技术。
（3）据材料分析可知，棉花亩产竟翻了一番，其法宝就是引进了优良品种和滴灌技术，说明和硕县农民的增产增收，主要得益于种植品种的改良、种植技术的改良，故A、B项正确；耕地规模没有扩大，只是调整了农业结构，故C项错误；交通运输条件的改善不是主要因素，故D项错误；化肥农药的使用和机械化程度的提高，材料中没有提到，故E、F项错误。
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2. 可适当增加细节，以使行文连贯。
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