【題目】氣候與農業(yè)生產的關系密切。結合所學知識完成下面小題。

【1】大多數(shù)農作物活躍生長需要日平均氣溫穩(wěn)定上升到（　�。�

A.0℃B.5℃C.10℃D.15℃

【2】各地活動積溫不同，農作物的品種和熟制也不同。合肥地區(qū)主要的糧食作物及熟制是（　�。�

A.小麥，一年一熟B.水稻，一年兩熟

C.玉米，兩年三熟D.谷子，一年三熟

【答案】

【1】C

【2】B

【解析】

【1】大多數(shù)農作物活躍生長需要日平均氣溫穩(wěn)定上升到10℃以上。我們把一年中≥10℃持續(xù)期內的日平均氣溫累加起來，得到的溫度總和，稱為活動積溫。故選：C。

【2】合肥位于秦嶺、淮河以南，該地區(qū)位于亞熱帶，主要的糧食作物是水稻，其作物熟制是一年兩熟。故選：B。

該題考查我國的氣候對農業(yè)的影響，分析解答即可。

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