12.(C) In the Centerville Botanical Gardens, all tulip trees are older than any maples. A majority, but not all, of the garden’s sycamores are older than any of its maples. All the garden’s maples are older than any of its dogwoods.
If the statements above are true, which one of the following must also be true of trees in the Centerville Botanical Gardens?
(A) Some dogwoods are as old as the youngest tulip trees.
(B) Some dogwoods are as old as the youngest sycamores.
(C) Some sycamores are not as old as the oldest dogwoods.
(D) Some tulip trees are not as old as the oldest sycamores.（E）
(E) Some sycamores are not as old as the youngest tulip trees
All Tulip trees >any maple trees > any dogwoods
Majority Sycamores trees > any maple trees > any dogwoods
是怎么得出E的?
| 欢迎光临 ChaseDream (https://forum.chasedream.com/) | Powered by Discuz! X3.3 |