遗传异质性（Genetic Heterogeneity）
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遗传异质性(genetic heterogeneity)
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The full title of the U.K. is the United Kingdom of （）and （）
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An exercise with heterogeneity can also have a positive effect on learner attitude and motivation. It provides an opportunity for the teacher to give slower or less confident students the approval and encouragement they need.（）
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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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