农作物播种面积是指实际播种或移植有农作物的面积，不包括（）。 在耕地上种植的农作物的面积。 在非耕地上种植的农作物的面积。 在耕地上移植的农作物的面积。 属于专业性的芦苇地、天然或人工草地面积。
The economy of the United states after 1952 was the econnomy of a well-fed,almost fully employed people. Despit occasional alarms, the country escaped any postwar depression and lived in a state of boom. A n economic survey of the year 1955, a typical year of the 1950’s, may be typical as illustrating the rapid economic growth of the decade. The national output was value at 10 percent above that of 1954 (1955 output was estimated at 392 billion dollars). The production of manufacturers was about 40 percent more than it had averaged in the years immediately following World War 2. The country’s business spent about 30billion dollars for new factories and machinery. National income available for spending was almost a third greater than it had been it had been in 1950. Consumers spent about 256 billion dollars; that is about 700 million dollars a day ,or about twenty-five million dollars every hour , all round the clock. Sixty-five million people held jobs and only a little more than two million wanted jobs but could not find them . Only agriculture complained that it was not sharing in the room. To some observers this was an ominous echo of the mid-1920’s . As farmer’s shre of their products declined , marketing costs rose. But there were , among the observers of the national economy, a few who were not as confident as the majority . Those few seemed to fear that the boom could not last and would eventually lead to the oppsite-depression.
The passage states that incom available for spending in the U.S. was greater in 1955 than in 1950 . How much was it （）? 60%。 50%。 33%。 90%。
马克威茨认为经过投资组合后投资方案会在（）得到均衡。 成本。 效益。 风险。 收益。
英国革命中出现克伦威尔任护国主的军事独裁统治，法国革命中出现拿破仑称帝。这主要是因为（） 资产阶级和封建势力的妥协。 资产阶级民主政治发展尚不充分。 稳定资本主义统治秩序的需要。 防止封建王朝的复辟。
The economy of the United states after 1952 was the econnomy of a well-fed,almost fully employed people. Despit occasional alarms, the country escaped any postwar depression and lived in a state of boom. A n economic survey of the year 1955, a typical year of the 1950’s, may be typical as illustrating the rapid economic growth of the decade. The national output was value at 10 percent above that of 1954 (1955 output was estimated at 392 billion dollars). The production of manufacturers was about 40 percent more than it had averaged in the years immediately following World War 2. The country’s business spent about 30billion dollars for new factories and machinery. National income available for spending was almost a third greater than it had been it had been in 1950. Consumers spent about 256 billion dollars; that is about 700 million dollars a day ,or about twenty-five million dollars every hour , all round the clock. Sixty-five million people held jobs and only a little more than two million wanted jobs but could not find them . Only agriculture complained that it was not sharing in the room. To some observers this was an ominous echo of the mid-1920’s . As farmer’s shre of their products declined , marketing costs rose. But there were , among the observers of the national economy, a few who were not as confident as the majority . Those few seemed to fear that the boom could not last and would eventually lead to the oppsite-depression.
Which of the following were LEAST satisfied with the national economy in the 1950’s?（） Economists。 Frmaers。 Politicians。 Steelworker。
农林牧渔业整劳动力是指（）。
