The U.S. faces severe economic problems.

The most crucial problem any economic system faces is how to use its scarce resources.A．pu

Top officials of several U.S. intelligence agencies believe thatA．the country"s security i

The most crucial problem any economic syst

The most urgent problem any economic syste

The most【 crucial】 problem any economic system fa

TheU.S.faces 【severe】 economic problems.A. slight