3. Suppose that U.S. citizens purchase more cars made in Korea, and Koreans purchase more bonds issued by U.S. corporations. Other things the same, these actions (A) lower both U.S. net exports and U.S. net capital outflows. (B) lower U.S. net exports and raise U.S. net capital outflows. (C)raise both U.S. net exports and U.S. net capital outflows. (D) raise U.S. net exports and lower U.S. net capital outflows.

複選題2. When the price of an apple is $5, the quantity demanded is 120 apples per month； when the price is $7, the quantity demanded is 100 apples per month. (A) The price elasticity of demand is elastic. (B) Using the midpoint method, the price elasticity of demand is about 0.3. (C)If the cross-price elasticity of demand between apples and oranges is 1.5, they are substitutes. (D) If the supply elasticity of apples is 0.1, then the apple sellers will bear a greater burden of a tax imposed on the market, even if the tax is imposed on the buyers.

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