多项选择题
造血诱导微环境中的核心成分是基质细胞，包括下列哪几项 A. 骨髓基质干细胞 B. 网状细胞 C. 成纤维细胞 D. 血窦内皮细胞 E. 巨噬细胞
造血诱导微环境中的核心成分是基质细胞，包括下列哪几项 A. 骨髓基质干细胞 B. 网状细胞 C. 成纤维细胞 D. 血窦内皮细胞 E. 巨噬细胞
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单项选择题
What is the proper attitude towards the locale factor in a feature story?
What is the proper attitude towards the locale factor in a feature story?
A．For a feature story, the“where" of the 5Ws, more often than not, is a single location.
B．A reporter should recognize the scope of the story in terms of locale in the later stages of reporting and writing a feature story.
C．In addressing the question of locale, a reporter tries to sketch out the extent of the field on which the development is being played out.
D．None of the above.