The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.
If x is an integer, is [*] an integer ？（）
(1) 18＜x＜54
(2) x is a multiple of 18
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.
参考答案：C
解析：
alone is insufficient, because if x=36, then the answer is "yes," but if x=37, then the answer is "no." (2) alone is insufficient, because if x=36, then the answer is "yes," but if x=180, then the answer is "no." If the statements are combined, however, then the only value of x that meets all the conditions is 36, for which the answer is "yes.\