LSAT的逻辑组题（三）b
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Questions 18-24 During a four-week period, cach of seven previously unadvertised products- G, H, J, K, L, M, and O-will be advertised. A different pair of these products will be advertised each week. Exactly one of the products will be a member of two of these four pairs. The following constraints must be observed: J is not advertised during a given week unless H is advertised during the immediately precceding week. The product that is advertised during two of the weeks is advertised during week 4 but is not advertised during week 3 G is not advertised during a given week unless either J or else O is also advertised that week. K is advertised during one of the first two weeks O is one of the products advertised during week 3 18. Which one of the following could be the schedule of advertisernents? (A) week 1: G, J; week 2: K, L; week 3: O, M; week 4: H, L (B) week 1: H, K; week 2: J, G; week 3: O, L; week 4: M, K (C) week 1: H, K; week 2: J, M; week 3: O, L; week 4: G, M (D) week 1: H, L; week 2: J, M; week 3: O, G; week 4: K, L (E) week 1: K, M; week 2: H, J; week 3: O, G; week 4: L, M 19. Which one of the following is a pair of products that CANNOT be advertised during the same week as each other? (A) H and k (B) H and M (C) J and O (D) K and L (E) L and M 20. Which one of the following must be advertised during week 2? (A) G (B) J (C) K (D) L (E) M 21. Which one of the following CANNOT be the product that is advertised during two of the weeks? (A) G (B) H (C) K (D) L (E) M 22. If L is the product that is advertised during two of the weeks, which one of the following is a product that must be advertised during one of the weeks in which L is advertised (A) G (B) H (C) J (D) K (E) M 23. Which one of the following is a product that could be advertised in any of the four weeks? (A) H (B) J (C) K (D) L (E) O 24. Which one of the following is a pair of products that could be advertised during the same week as each other (A) G and H (B) H and J (C) H and O (D) K and O (E) K and O (F) M and O |
