【简答题】From the refined oil we obtain important products, such as ______ , kerosene, detergents,______ ,______ , and perfumes.
【单选题】下列哪一种情况引起总需求曲线向右方移动:
【单选题】下列哪一种情况引起总需求曲线向右方移动?( )。
【单选题】下列哪一种情况引起总需求曲线向右方移动()。
【单选题】We can learn from the last paragraph that ______.
A.
it is necessary to obtain as much knowledge as possible
B.
people should make the best use of the information accessible
C.
we should realize the importance of accumulating information
D.
it is of vital importance to acquire needed information efficiently
【单选题】其他条件不变时,下列哪一种情况会引起总需求曲线向右上方移动( )
【单选题】We’ve ____ a conclusion that this is not true.
【单选题】国防法规规定的 公民的国防义务有:( )的义务、接受国防教育的义务、保护国防设施的义务、( )的义务、支持国防建设协助军事活动的义务。