Two male singers, P and S; two female singers, R and V; two male comedians, T and W; and two female comedians, Q and U, are the eight entertainers who are to perform at the Stuart heater on a certain
night. Each entertainer is to perform alone and only once that night. The entertainers may perform in any
order that conforms to the following restrictions:
The performances by singers and the performances by comedians must alternate throughout the evening.
The first performance that evening must be by a female entertainer, and the second performance by a male entertainer.
The final performance must be by a male singer.
1. Which of the following could be the last of the entertainers to perform?
(A) R (B) S (C) T (D) V (E) W
2. Which of the following could be the first of the entertainers to perform?
(A) P (B) R (C) U (D) V (E) W
3. If R is to perform fourth, which of the following must perform sixth?
(A) P (B) S (C) U (D) V (E) W
4. If U is to perform seventh, which of the following must perform first?
(A) Q (B) R (C) S (D) T (E) V
5. If P is to perform eighth, which of the following must perform second?
(A) R (B) S (C) T (D) V (E) W
6. If T is to perform third, W must perform
(A) first or fifth (B) second or fifth
(C) fourth or seventh (D) fifth or seventh
(E) sixth or seventh
7. If Q is to perform third, V fourth, and W fifth, which of the following must perform sixth?
(A) P (B) R (C) S (D) T (E) U
keys:
passage 1: 1.E 2.A 3.C 4.A 5.C
passage 2: 1.A 2.E 3.B 4.E 5.C
passage 3: 1.D 2.E 3.A 4.C 5.D
passage 4: 1.D 2.C 3.E
passage 5: 1.A 2.A 3.D 4.E
passage 6: 1.B 2.C 3.D 4.A 5.B 6.D 7.B
责任编辑：sealion1986
