評(píng)論
打印
On each of the three consecutive days Monday through
Wednesday, exactly two employees are to staff a com-
pany’s information booth. The three available employees
—Feng, Gómez, and Hull—will staff the booth in
accordance with the following conditions：
Gómez and Hull must each staff the booth on at least
one of the days, but Feng must staff it on at least two
the days.
The booth cannot be staffed by the same two employees
on any two consecutive days.
If Hull staffs the booth on Monday, Gómez must be the
other employee staffing the booth on Monday.
13.Which of the following can be the schedule of
employees staffing the booth on the three days?
Monday Tuesday Wednesday
(A) Feng,Gómez Feng,Gómez Feng,Hull
(B) Feng,Gómez Feng,Hul Gómez,Hull
(C) Feng,Hull Feng,Gómez Gómez,Hull
(D) Gómez,Hull Feng,Gómez Gómez,Hull
(E) Gómez,Hull Feng,Hull Feng,Hull
14.If Gómez staffs the booth on Monday and Tuesday,
which of the following must be true?
(A) Feng staffs the booth on Monday.
(B) Feng staffs the booth on Tuesday.
(C) Feng staffs the booth on Wednesday.
(D) Hull staffs the booth on Monday.
(E) Hull staffs the booth on Tuesday.
15.If Hull staffs the booth on Monday and Wednesday,
which of the following must be true?
(A) Feng and Gómez staff the booth on Tuesday.
(B) Feng and Hull staff the booth on Monday.
(C) Feng and Hull staff the booth on Tuesday.
(D) Gómez and Hull staff the booth on Tuesday.
(E) Gómez and Hull staff the booth on Wednesday.
16.If Hull staffs the booth on only one of the days,
which of the following can be true?
(A) Feng and Hull staff the booth on Monday.
(B) Feng and Hull staff the booth on Wednesday.
(C) Gómez and Hull staff the booth on Monday.
(D) Gómez and Hull staff the booth on Tuesday.
(E) Gómez and Hull staff the booth on Wednesday.
Questions 17-22
A science teacher is selecting projects for each of two
classes from a group of exactly seven projects—R, S,
T, V, X, Y, and Z. The teacher will assign projects to
Class 1 and Class 2 according to the following
conditions：
Each project must be assigned to exactly one class.
Four of the projects must be assigned to Class 1 and
three to Class 2.
R must be assigned to Class 2.
The class to which V is assigned cannot be the same
class as the one to which Y is assigned.
If V is assigned to Class 1, X must be assigned
to Class 1.
If Z is assigned to Class 2, Y must be assigned to
Class 1.
17.Which of the following could be the projects assigned
to the two classes?
Class 1 Class 2
(A) R, V, X, Y S, T, Z
(B) S, T, V, Z R, X, Y
(C) S, T, X, Y R, V, Z
(D) S, T, X, Z R, V, Y
(E) S, V, X, Y R, T, Z
18.If X is assigned to Class 2, which of the following
must be true?
(A) R is assigned to Class 1.
(B) S is assigned to Class 2.
(C) T is assigned to Class 2.
(D) Y is assigned to Class 1.
(E) Z is assigned to Class 2.
19.If Z is assigned to Class 2, which of the following
must be true?
(A) S is assigned to Class 2.
(B) T is assigned to Class 2.
(C) V is assigned to Class 1.
(D) X is assigned to Class 1.
(E) Y is assigned to Class 2.
20.If Y is assigned to Class 2, any of the following
could be assigned together to one of the classes
EXCEPT
(A) R and T
(B) S and T
(C) S and Y
(D) T and Z
(E) X and Z
