何谓实性癌？简述其病理特点？
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实性癌、硬癌、单纯癌、软癌均为（）。
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关于实性癌的叙述，下列哪项是正确的（ ）
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The full title of the U.K. is the United Kingdom of （）and （）
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组织和细胞培养(tissue-and-cell-culture)
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APUD瘤(amine precursor uptake and decarboxylation tumor)
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public and private colleges and universities and community colleges offer（）.
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（）is used for calling and replying,and for transmitting acknowleding and relaying distress alerts.
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The way in which people address each other depends on their age, sex, social group and personal relationship. The English system of address forms frequently used includes first name, last name, title+last name, （）, and kin term.
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