Questions 1-5
A gardener is landscaping part of a front yard with six types of bushes—forsythia, holly, lilac, oleander, rose, and spirea.The forsythia and the lilac bushes are the only bushes classified as tall bushes.The gardener will plant two clusters of exactly four bushes each, one on the east edge of the property and one on the west edge.The selection of the bushes is subject to the following constraints:
Each type of bush must be used at least once.
Each cluster of bushes must contain at least one tall bush.
A cluster that includes one or more forsythia bushes must include at least one oleander bush.
A lilac bush cannot be planted in the same cluster as a spirea bush.
1.If three lilac bushes are selected for one cluster,which of the following can be the bushes selected for the other cluster?
(A) Forsythia, holly, oleander, rose.
(B) Forsythia, holly, rose, spirea.
(C) Forsythia, lilac, oleander, spirea.
(D) Forsythia, oleander, rose, spirea.
(E) Holly, oleander, rose, spirea.
2.Which of the following can be the selection of bushes for one of the clusters?
(A) Forsythia, holly, oleander, rose.
(B) Forsythia, holly, oleander, spirea.
(C) Forsythia, lilac, rose, rose.
(D) Forsythia, oleander, oleander, oleander.
(E) Lilac, lilac, rose, spirea.
3.If a total of two forsythia bushes is selected, which of the following must be true?
(A) Only one holly bush is selected.
(B) Only one rose bush is selected.
(C) Only one spirea bush is selected.
(D) Two oleander bushes are selected.
(E) The two forsythia bushes are in the same cluster.
4.If one rose bush is selected for each cluster, which of the following combinations must complete one of the clusters?
(A) Forsythia, forsythia, oleander.
(B) Forsythia, lilac, oleander.
(C) Forsythia, oleander, spirea.
(D) Holly, holly,holly.
(E) Holly, lilac, oleander.
5.If one forsythia bush is selected for the east cluster,and if two holly bushes are selected for the west cluster, then any of the following can be selected for the east cluster EXCEPT
(A) holly
(B) lilac
(C) oleander
(D) rose
(E) spirea
答案：DBC CB
