请教数学题 GWD-06-29

Q29:

From 1985 to 1994, what was the percent increase in total United States trade?

(1)   Total United States trade in 1985 was 17 percent of gross domestic product in 1985.

(2)   Total United States trade in 1994 was 23 percent of gross domestic product in 1994.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

Answer: C  正确：E

我觉得题目主干有歧义啊。可以理解为总量的增长，也可以理解为这两个percent的变化情况。

我觉得就是问两个percent的变化吧

直接减，可能是