肯定选D了
"from"后有个"plants"做介宾了,故可以省去前面的指代了,即不用"they".
"once"表曾经,放在动词之前
All of the plants now raised on farms have been developed fr
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相关问题
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All of the plants now raised on farms have been developed fr
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1.All of the plants now raised on farms have been developed
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All of the flowers now raised here have developed from those
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All of the flowers now raised here have developed from those
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All of the flowers now raised here have developed from those
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定语从句问题2. All of the flowers now raised here have developed f
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英语定语从句：All of the flowers now raised here have developed fro
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英语单选：All of the plants now farmed on a large scale were deve
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On most American farms,one or two products have been raised
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Of all the economically important plants,palms have been the