数字题什么方法最好 - ChaseDream

A ten-year comparison between the United States and the Soviet Union in terms of crop yields per acre revealed that when only planted acreage is compared,Soviet yields are equal to 68 percent of United States yields.When total argriculture acreage (planted acreage plus fallow acreage) is compared,however,Soviet yield is 114 percent of United States yields.

From the information above,which of the following can be most reliably inferred about United States and Soviet agriculture during the ten-year period?

A) A higher percentage of total agriculture acreage was fallow in the United States than in the Soviet Union.

B) The United States had more fallow acreage than planted acreage.

C) Fewer total acres of available agricultural land was fallow in the Soviet Union than in the United States.

D) The Soviet Union had more planted acreage than fallow acreage.

E) The Soviet Union produced a greater volume of crops than the United States produced.

选A.分子 crop yields 不变的情况下，分母里fallow acreage占total argriculture acreage比例越大，值就变得越小。而单纯数字是无法比较大小的。