Today,it is estimated that about 60 per cent of domestic rice consumption in China is comprised of crops generated from Yuan's hybrid strains,and his strains have allowed China's farmers to produce around 200 million tons of rice per year. 復合句復合句
【考點】it作形式主語.
【答案】復合句
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發(fā)布:2024/6/27 10:35:59組卷:10引用:2難度:0.9
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