题目

植物从土壤中吸收并运输到叶肉细胞的氮和磷,主要用于合成   (    ) ①淀粉      ②葡萄糖    ③脂肪  ④磷脂    ⑤蛋白质     ⑥核酸 A.①④⑥           B.③④⑤           C.④⑤⑥           D.②④⑤ 答案:C 解析: 略Our school along with many other brother middle schools _____to take another joint test next month.A.are??? ????????????? B.will be? ????????????? C.is????? ????????????? D.may be 
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