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
A选项中的those为什么不能指rice production呢? 指代是要就近吗?
those只能指代复数,rice production是不可数的单数
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