【单选题】If demand is unit elastic:
A.
Total revenue and prices rise and fall together.
B.
Total revenue rises as price falls.
C.
Total revenue falls as price rises.
D.
Total revenue remains constant as price rises or falls.
【单选题】Demand is said to be unit elastic if_________.
A.
the demand curve shifts by the same percentage amount as the price
B.
quantity demanded changes by the same percent as the price
C.
quantity demanded does not respond to a change in price
D.
quantity demanded changes by a larger percent than the price
【单选题】要使标签中的文本靠右显示,应将其Aligraent属性设置为
【单选题】在链表中最常用的操作是删除表中第一个结点和在最后一个结点之后插入元素,则采用 最节省时间。
【简答题】How did Mary feel at her first public performance?