单选题
Governments all over the world make public about the condition of their economies. Most countries , including the United States, have used a measure【C1】______the gross national product or GNP. It includes all【C2】______and services produced by citizens of the country【C3】______in the world. Recently the American Commerce Department has started using a new【C4】______to measure production. It is known as the gross domestic product or GDP. It counts only goods and services that have been produced【C5】______the nation" s borders. Money【C6】______by foreign companies operating in the United States is included in the GDP. Money earned by American companies operating in the United States is included in the GDP, but money earned by American companies operating in other countries【C7】______. Economic experts are generally in favor【C8】______the change. They say that the gross domestic product provides a truer measure of the【C9】______. They also note that most other industrial countries use this method. 【C10】______it will be easier to study the economies of different countries. Some【C11】______also hope the new system will help them【C12】______better economic policy decisions. It will provide them【C13】______a clearer understanding of economic activity in the US. The new measure is【C14】______likely to be affected by sudden changes in foreign oil prices or in the【C15】______of the American dollar in other countries. 【C16】______experts believe that the change from GNP to GDP will immediately reduce the value of American production【C17】______at least 40, 000 million dollars a year. But that is really a very 【C18】______change in the American economy—less than 1%. The Commerce Department reports the unofficial gross domestic product once【C19】______three months. The government also 【C20】______to report GNP as it has four times a year since 1941.