【单选题】阅读材料,回答题。 What do we mean by a satisfactory standard of living? Obviously, it must include the basic necessities of life such as food, clothing and shelter. To get these necessities on regular basis, ...
A.
the basic necessities and luxury
B.
many kinds of need such as food, clothing and houses
C.
four groups the basic necessities, luxury, reliable income and future expense