The problem of "scarcity" applies A: only in industrially developed countries because resources are scarce in these countries. B: only in underdeveloped countries because there are few productive resources in these countries. C: only in economic systems that are just beginning to develop because specialized resources are scarce. D: to all economic systems, regardless of their level of development.

Marginal scarcity rent would still not be zero if water were not scarce.

Scarce resources include labor hours.

Food is scarce and______________ they will go hungry.

Gold has been highly prized throughout the ages due chiefly to（） A: it is scarce B: so scarce is it C: its scarcity D: scarcity of it

Fresh food is so scarce that prices have ________.

Some people believe that since oil is scarce, the ________ of the motor industry is uncertain

Timwasapersonoffewwords.Onthe____occasionswhenhespoke,hisvoicesoundednervous. A: seldom B: least C: rare D: scarce

His disease is not ____________ but chronic. A: weary B: fragile C: scarce D: acute

The battle for third place was ( ). A: legitimate B: scarce C: fraudulent D: intense