【简答题】因腺垂体分泌的______可刺激间质细胞分泌睾酮,故称之为______。而支持细胞分泌的______有抑制腺垂体分泌FSH的作用。
【单选题】The nursery industry involves _____________ .
【简答题】The production of ornamental plants can be divided on the basis ofcrop into some categories. Which of them is related to rose plants? _____________A. floriculture B. growing of landscape plants C. gro...
【单选题】The industry of landscape horticulture is referred to as _____________ .