All over Britain there are ruins of castles that reflect their entire past. Over the years, legends have focused on these castles. Castell Coch This castle was built in the 1870's. Lfor Bach was once the owner of this castle many decades ago, and it is told that he hid a treasure in the nearby tunnel（地道）. Rumors say that it is guarded by three eagles waiting for Lfor to return to collect his treasure. Luffness Castle In the basement(地下室) of this castle is a huge door leading to a room. The family kept this door open at all times, but one day the door was found locked and the key was missing. The whole family was surprised. The door was so big that it could not be broken down. One day the son of the family shone of a torch the door. He discovered that the key was on the inside of the room. To this day the door remains locked from the inside. Toddington Castle This castle was built during the 13th century. This castle has a local legend that tells about a witch who was put in prison within the castle and died. It is told that her spirit remains and if you put your ear to the floor at Easter, you can hear her cooking below. Castell Gwynionydd A legend rests on this castle that states the devil(魔鬼) was the one who built it. It is said the devil had a problem with some people and had planned on punishing them. On his way, the devil met a cobbler（修鞋匠）.The cobbler pointed out that it was still a reasonable distance until he would reach his destination. The cobbler displayed how many shoes he had worn out. Listening to him, the devil did not think his plan was worth so much effort and gave up his plan. 50．Which of the castles mentioned in the passage is said to be guarded by several birds? A．Castell Coch.          B．Luffness Castle. C．Toddington Castle.   D．Castell Gwynionydd. 51．Which of the following castles is related to the legend about a witch? A．Castell Coch. B．Luffness Castle. C．Toddington Castle. D．Castell Gwynionydd. 52．We can learn from the passage that          . A．Castell Coch is said to be built by the devil B．Castell Gwynionydd is a great place to celebrate Easter C．Luffness Castle was once broken down D．Toddington Castle dates back to the 13 th century