下图为我国某农作物主产区某年6月16日发育及收获进程分布图，

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下图为我国某农作物主产区某年6月16日发育及收获进程分布图，读图完成下列问题。

据图判断该农作物为

A．玉米

B．棉花

C．小麦

D．水稻

该农作物在甲、乙两地的发育晚于同纬度地区的主要原因可能是

A．降水较小

B．地势较高

C．技术落后

D．旱灾频发

该农作物在丙地与同纬度内陆地区同时成熟，但丙地收割却较晚的原因可能是

A．阴雨天气不利于收割和晾晒	B．机械化水平低影响收割进度
C．劳动力短缺影响收割进度	D．市场价格走低导致农民收割意愿不强

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