GRE北美题No9-6.docVIP

SECTION 6 Questions 1-5 Seven dignitaries—F, G, H, I, N, O, and P—are to be seated together at a diplomatic ceremony. They will be seated in a row of seven chairs, numbered from 1 to 7, from front to back. Any seating is acceptable as long as all seven dignitaries are seated, one in each chair, and the seating conforms to the following rules: F must sit in the chair immediately behind O’s chair. G cannot sit in the chair immediately in front of N’s chair, and G cannot sit in the chair immedi- ately behind N’s chair. There must be exactly two chairs between the chairs of H and P. There must be at least one chair between the chairs of I and P. N must sit in chair 3. 1. Which of the following seating arrangements, from chair 1 through chair 7, conforms to the rules? (A) F, I, N, P, G, O, H (B) G, P, N, I, H, O, F (C) I, G, N, P, O, F, H (D) I, H, N, P, O, F, G (E) O, F, H, N, I, P, G 2. If F sits in chair 6 and H sits in chair 7, which of the following dignitaries must sit in chair 2? (A) G (B) I (C) N (D) O (E) P 3. If the seating arrangement, from chair 1 through chair 7, is G, I, N, H, O, F, P, which of the following pairs of dignitaries can exchange seats without violating the rules? (A) F and G (B) G and H (C) G and I (D) H and P (E) I and P 4. If O sits in chair 1 and H sits in chair 7, then the number of chairs between F’s chair and I’s chair must be (A) zero (B) one (C) two (D) three (E) four 5. If H sits in chair 4 and F sits in chair 6, then the dignitaries in chairs 1 and 7, respectively, must be (A) G and O (B) G and P (C) I and P (D) O and I (E) P and O 6. A judicial order of a few years ago was intended to foster competition in the telephone industry; it was thought that competition would lead to savings for consumers. Long-distance calls made during the day are now cheaper than they were before the order, but the average residential user’s charges for long-