听力原文：American companies under ,government contract are often faced with the choice of buying American- made goods, which are expensive, and foreign-made goods, which are cheap. If the company buys American goods, it may anger taxpayers by failing to keep prices low. But if it buys foreign goods, it may endanger the jobs of American workers. Recently, Congress has passed a law compelling American companies with government contracts to give preference to domestic goods and services. (57)