生态因子
参考答案:是指环境中对生物生长、发育、生殖、行为和分布有直接或间接影响的环境要素。
There have been dozens of reports ____ people have seen a Wild Man in the Shennongjia Nature
Reserve in western Hubei Province, China. [ ]
A. which
B. what
C. that
D. as
试论布坎南对公共决策失误的原因分析。