GMAT考试-Testprep数学精解2(11)

　　Testprep充分性精解转载smth 2001-10-14 10：51：58发信人： ykk （我不说话并不代表我不在乎），信区： EnglishTest

　　标题：（GMAT）Testprep充分性精解

　　发信站： BBS水木清华站（Fri Oct 12 16：07：05 2001）

　　Data Sufficiency

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　　INTRODUCTION DATA SUFFICIENCY

　　Most people have much more difficulty with the Data Sufficiency problems tha

　　n with the Standard Math problems. However， the mathematical knowledge and s

　　kill required to solve Data Sufficiency problems is no greater than that req

　　uired to solve standard math problems. What makes Data Sufficiency problems

　　appear harder at first is the complicated directions. But once you become fa

　　miliar with the directions， you'll find these problems no harder than standa

　　rd math problems. In fact， people usually become proficient more quickly on

　　Data Sufficiency problems.

　　THE DIRECTIONS

　　The directions for Data Sufficiency questions are rather complicated. Before

　　reading any further， take some time to learn the directions cold. Some of t

　　he wording in the directions below has been changed from the GMAT to make it

　　clearer. You should never have to look at the instructions during the test.

　　Directions： Each of the following Data Sufficiency problems contains a quest

　　ion followed by two statements， numbered （1） and （2）。 You need not solve the

　　problem； rather you must decide whether the information given is sufficient

　　to solve the problem.

　　The correct answer to a question is

　　A if statement （1） ALONE is sufficient to answer the question but statement

　　（2） alone is not sufficient；

　　B if statement （2） ALONE is sufficient to answer the question but statement

　　（1） alone is not sufficient；

　　C if the two statements TAKEN TOGETHER are sufficient to answer the question

　　， but NEITHER statement ALONE is sufficient；

　　D if EACH statement ALONE is sufficient to answer the question；

　　E if the two statements TAKEN TOGETHER are still NOT sufficient to answer th

　　e question.

　　Numbers： Only real numbers are used. That is， there are no complex numbers.

　　Drawings： The drawings are drawn to scale according to the information given

　　in the question， but may conflict with the information given in statements

　　（1） and （2）。