【判断题】用于监听HttpSession对象生命周期的接口是HttpSessionBindingListener。
【单选题】以下属于不健康的生活方式的是( )。
B.
起居有常,顺应晨昏昼夜和春夏秋冬的自然变化规律
【单选题】When the price of popcorn falls, we know for sure that before there is any change in the quantity of popcorn bought, the ________.
A.
marginal utility from popcorn increases
B.
marginal utility per dollar from popcorn increases
C.
total expenditure on popcorn rises
D.
marginal utility per dollar from popcorn decreases
【简答题】党的三大优良传统是(__),(__),(__)