About one fourth of the families in the city have private cars and this number _____ to double in fi

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• 原核细胞与真核细胞的形态结构千差万别，但都有相似的基本结构，如细胞膜、细胞质和与遗传有关的核物质。这反映了细胞的[]A．差异性B．统一性C．多样性D．单一性-高一生物
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• —Mum, can I go out and play basketball?—If your homework ______, you can go. [ ]A. will be done B. h
• Among all these flowers _____a kind of red rose, which was given by my friend. [ ]A. is included B.
• It _______ this morning that two of the body guards of the prime minister got killed and the ministe
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• 下列关于细胞共性的描述正确的是[]A．所有细胞内都含有糖原B．细胞都能进行分裂和分化C．细胞都具有细胞质和细胞膜D．用龙胆紫溶液染色细胞，都能观察到深色的染色体-高三生物
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• — Do you have any problems if you____ this job?— Well,I'm thinking about the salary... [ ]A. of
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• — The windows must have taken you quite a long time that day.— Right. They ____ for weeks. [ ]A. hav
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• 成人身体约有1014个细胞，这些细胞大约有200种不同的类型，根据分化程度的不同，又可分为600多种，但是都有基本相同的结构，这说明[]A．人体细胞既有多样性，又有统一性B．细胞-高一生物
• 假设你去某饲料研究所进行课外实践活动，需要完成以下任务：(1)选用恰当的试剂检测某样品中是否含有蛋白质。提供的试剂有：①碘液，②苏丹Ⅲ溶液，③双缩脲试剂，④斐林试剂。你选用-高二生物