【单选题】Suppose a country abandons a no-trade policy in favor of a free-trade policy. If, as a result, the domestic price of pistachios decreases to equal the world price of pistachios, then
A.
that country becomes an importer of pistachios.
B.
that country has a comparative advantage in producing pistachios.
C.
at the world price, the quantity of pistachios supplied in that country exceeds the quantity of pistachios demanded in that country.
【简答题】We can express our feelings and needs by using body language. Cats can do that too. The ways that cats use their tails to show their feelings and needs are interesting. Unlike dogs, which generally wa...