单选题

There are four questions below

An art museum owns six paintings by an eighteenth- century painter．The paintings, listed in order by esti- mated value from lowest to highest, are F, G, H, S, T, and U．Paintings F, G, and H are landscapes; S, T, and U are portraits．At any one time, exactly three of the six paintings are on exhibit, subject to the following restrictions: The paintings on exhibit cannot all be landscapes． If the exhibit includes only one portrait, that portrait must be U． H cannot be on exhibit at any time that T is on exhibit.

单选题

Which of the following could be the three paintings on exhibit at some point？

A、 F, G, and H
B、 F, G, and T
C、 G, H, and S
D、 G, S, and U
E、 H, T, and U

【正确答案】 D

【答案解析】

单选题

Which of the following, if they are the first two paintings selected for inclusion in a future exhibit, leave the widest choice of paintings for the third painting in that future exhibit？

A、 F and G
B、 G and H
C、 H and U
D、 S and T
E、 S and U

【正确答案】 E

【答案解析】

单选题

An exhibit must include S if which of the following is true？

A、 T is included in the exhibit．
B、 T is not included in the exhibit．
C、 H is the only landscape included in the exhibit．
D、 U is included in the exhibit．
E、 The exhibit includes either F or G, but not both．

【正确答案】 C

【答案解析】

单选题

If U is undergoing restoration and is not available to be exhibited, which of the following is a painting that CANNOT then be exhibited？

A、 F
B、 G
C、 H
D、 S
E、 T

【正确答案】 C

【答案解析】