单项选择题

以韩国、奥地利、瑞士等欧洲国家的13个研究机构组成的国际生态纺织品研究和检验协会。

A．对
B．错

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单项选择题

Most cancers are assumed to arise through which of the following?
A、errors in transcription
B、the production of unbalanced gametes because of nondisjunction during meiosis
C、genetic or epigenetic changes in somatic cells
D、delayed cell division during early embryogenesis
E、No correct answer is provided

多项选择题

个人危机包含如下哪些项 A.
工作危机
B.
情感危机
C.
规划危机
D.
身体危机