二、阅读理解。
A
阅读下面材料,从题中所给的 A、B、C、D四个选项中选出一个最佳选项。
The Big Stone River is one of the most amazing stone rivers in the world.
The Big Stone River is the most interesting sight of Taganai Park in Russia. Different from other rivers, it is filled with rocks and stones. Not a drop of water can be seen. Interestingly, as one comes near to the rocky river, the sound of running water can be heard. Rocks fell down from the mountains slowly and made the river of rocks.
The Big Stone River is about 6 km long and is made up of many small rocky rivers.It cuts through a thick forest like a real river.It is about 200 metres wide and in some places, it is up to 700 metres wide.Some of the rocks weigh up to 10 tons each and the layer of rocks goes down 6 metres deep.
Scientists believe it is the consequence of the movement of glaciers（冰川）about 10,000 years ago. At that time, ice covered the top of the mountains. As time went by, the ice turned into water. Seeing the amazing river is a great experience. The best way to experience this natural wonder is from above. Come and visit it when you come to Russia.
16. Why is the Big Stone River special?
A.Because it is in Taganai Park.
B.Because it is full of fish.
C.Because it is impossible to see water there.
D.Because the sound of running water is loud.
17. How wide is the widest part of the Big Stone River?
A.6 metres.
B.200 metres.
C.700 metres.
D.6,000 metres.
18. Which of the following can take the place of "consequence" in the text?
A.reason
B.result
C.end
D.beginning
19. Which of the following is TRUE according to the passage?
A.The Big Stone River is the only stone river in the world.
B.The Big Stone River is a real river through a thick forest.
C.The Big Stone River is made up of some big rocky rivers.
D.Enjoying the Big Stone River from a higher place is the best way.
20. What would be the best title for the passage?
A.The Big Stone River
B.A Very Amazing Stone
C.An Unforgettable Experience
D.A Running River

16~20.CCBDA