农业劳动生产率计算公式有两种:①农产品产量或产值/劳动消耗;②劳动消耗/农产品产量或产值。下列观点正确的是( )
A.①不正确
B.①正确
C.①和②相互矛盾
D.①和②都不正确
正确答案是B
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Passage Three Ivan Stoltzfus, 70, was a successfulfarmer for 30 years near Lancaster,Pennsylvania. Then one day. he recalled wisewords from his father and he decided to fulfill lifelong dream. said one dayout of the blue,
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