In 1968，a farmer dug a beautiful pot out of the field.As it had no lid（盖子） to open，the farmer thought it useless and just kept it in the house.
   Fourteen years later when a friend dropped in，this special pot caught his attention.He took it to a museum and asked experts（专家） for help.Soon experts came to a surprising result：the pot belonged to the Five Dynasties（907-960）.
   But experts didn't know how to pour water into the pot.They only found a small hole in the bottom.What was it used for？
   To find the answers，experts gave the pot an X-ray，and found there were two pipes（管道） inside.One straight pipe is in the middle，and the other curved（弯的） pipe connects to the spout（壶嘴）.The small hole in the bottom is the end of the straight pipe.When using the pot，people have to first hold it upside down and then pour water into the small hole.Water can be poured out from the spout through the curved pipe，but it won't come out from the hole in the bottom.This keeps the water inside clean.
   Experts further studied the designs（图案） on the pot.In China，the lion is the "king of animals"，the peony is the "king of flowers"，and the phoenix is the "king of birds".These special designs are used to express good wishes.As all three appear on the pot，it is named "Pot of Three Kings".
   Now the pot is housed in Shaanxi History Museum.Many visitors，local and international，are surprised at the wisdom of the Chinese people over 1，000 years ago!
（1）The discovery of the pot follows the order of

C

C

.
a.The experts gave the pot an X-ray
b.The friend took the pot to the museum
c.The farmer dug out the pot
d.The friend dropped in
A．c-d-a-b
B．b-a-c-d
C．c-d-b-a
D．d-c-a-b
（2）The underlined word "it" in Paragraph 3 refers to

B

B

.
A．the lid
B．the hole
C．the bottom
D．the water
（3）The inner structure（内部结构） of the magic pot may be

A

A

.
A．
B．
C．
D．
（4）The pot is named "Pot of Three Kings" according to its

D

D

.
A．structures
B．value
C．age
D．designs