GRE考试

【单选题】

Which of the following statements can be inferred from the data I. The greatest increase in total yearly revenue over any 10-year period shown was $7 million.II. In each of the 10-year periods shown in which total yearly revenue increased, the average number of production hours per widget decreaseD、III. From 1980 to 1990, fewer widgets were sold because each widget took longer to produce.A、I only

B、
B、II only
C、III only
D、I and III
E、II and III

网考网参考答案：B
网考网解析：
According to the graphs, the greatest increase in total yearly revenue over any 10-year period shown was $10 million—from 1970 to 1980. Therefore, Roman numeral I is not true, and you can eliminate answer choices A and D, which include Roman numeral I. According to the graphs, from 1960 to 1970 and from 1970 to 1980, total yearly revenue increased while average production hours per widget decreased; therefore, Roman numeral II is true. Eliminate answer choice C because it does not include Roman numeral II According to the graphs, from 1980 to 1990, the number of widgets sold decreased while the average number of production hours per widget increased; you might be tempted to infer that the reduced number of widgets sold was due to the increased production time, but there could have been other factors that you are not aware of; therefore, you cannot safely accept Roman numeral III as true. Eliminate answer choice E. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>