In 1979 lack of rain reduced India's rice production to about 41 million tons, nearly 25 percent less than those of the 1978 harvest.
less than those of the 1978 harvest
less than the 1978 harvest
less than 1978
fewer than 1978
fewer than that of India's 1978 harvest
1.41 million tons中的tons是计量单位,不是复数名词。产量是单数,所以不能用those。
2.比较对象不是年份(1978),而应该是收成。
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