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• 有些植物如桃树、杏树在春天开花时，叶子尚未长出，开花时期植株需要的能量可能来自[]A．春天植株从土壤中吸收的无机盐B．春天植株从土壤中吸收的有机物C．花瓣利用太阳能进行的-七年级生物
• He changed so much that only when I looked closely________he was exactly my long lost friend.A．I rea
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• ________about the result of the experiment，he still wants to give it a try．A．Uncertain as he isB．As
• 不同植物及同种植物的不同生长时期，需要的无机盐是不同的。[]-八年级生物
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• Never______ such a difficult problem. It took me almost half an hour to work it out.A．had I come ac
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• Not until I read your letter ________ the true state of the affairs.A．did I understandB．had I unders
• ---Have you got any particular plans for the coming holiday? ---Yes._____, I’m going to visit some h
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