【单选题】下列叙述错误的是( )
A.
不同的土壤类型、温度和湿度等环境因素决定各种栖息地的特征
【简答题】下图甲为种群的年龄结构图,图乙是某一动物种群迁入一个适宜环境后的增长曲线图,请据图回答: 图甲中B表示()型,其种群密度的发展趋势是();决定种群密度的最关键特征是()。
【单选题】At the age of 29, Dave was a worker, _____ in a small apartment near Boston and _____ what to do about his future. [ ]
【判断题】很多海洋生物群落(特别是浮游生物)的种类组成(主要是关键种 )表现出季节性的特征,这种季节变化也叫季节演替。
【单选题】根据消费税有关规定,下列说法正确的是()。
B.
以石油为原料加工的矿物性润滑油不属于润滑油征收范围
C.
以柴油组分为主、经调和精制可以作为柴油发动机的非标油,属于柴油征收范围
D.
以动植物油为原料,经提纯、精制、合成等工艺生产的生物柴油,不属于消费税征收范围
【单选题】According to Francis Bacon, what do studies serve for?
A.
Studies serve for joy, for happiness, and for joviality.
B.
Studies serve for delight, for ornament, and for ability.
C.
Studies serve for money, for rank, and for fame.
D.
Studies serve for convenience, for comfort, and for content.
【单选题】That was _______ matter that I had no choice but to talk it over with my parents.
【单选题】下列关于生物柴油原料说法不正确的是( )
【单选题】At the age of 22, Dave was a loser, _____ in a small apartment near Sydney and _____ what to do about his future.