【单选题】During the economic crisis, they had to cut back production and______workers.
【简答题】是生命活动的主要承担者, 是遗传信息的携带者。
【判断题】可转债包括自愿转股、有条件强制性转股和到期无条件强制性转股等形式,具有股票期权的性质。()
【判断题】可转债包括自愿转股、有条件强制性转股和到期无条件前置性转股等形式,具有股票期权的性质。()
【多选题】DNA 指导RNA合成的叙述,正确的是
A.
只有在DNA存在时,RNA聚合酶才有催化作用
【简答题】They claim that ________ 1,000 factories closed down during the economic cr. A) sufficiently B) approximately C) considerably D) properly
【判断题】转录的延伸过程不需要RNA聚合酶的催化,只需核心酶。( )
【单选题】During the economic crisis, we should help those for ______life is far from easy.