细菌哪种结构的功能类似真核细胞的线粒体()
A.核糖体
B.胞质颗粒
C.中介体
D.质粒
E.异染颗粒
参考答案:C
One _______ fact is _______ Crystal always keeps a toothbrush in his pocket for good luck when he is the host of the Academy Awards.
A.little-knowing ; 不填
B.well-known ; which
C.little-known ; what
D.little-known ; that
在环境中对生物的生命活动起直接作用的要素是()。
A、气候
B、日光
C、土壤
D、湿度