语篇提能
Ⅰ.完形填空
London's River Thames has twentyseven bridges. Tower Bridge, the first bridge over the Thames as you travel towards London from the sea, is the__1__of them all.
The thing that is surprising about__2__is that it opens in the middle. It does this to let the big ships__3__to the Pool of London. If you are__4__enough to see the bridge with its two opening arms high in the air, you will never forget it.
Tower Bridge is more than one hundred years old. It was built in the __5__. By 1850, everyone__6__that a bridge across the Thames near the Tower of London which is almost a thousand years old was most necessary. But the__7__argued about the new bridge for about__8__thirty years. The argue lasted so long because of two problems. The new bridge must look like the Tower of London — everyone said so. It__9__not look like a modern bridge. But because of the tall ships it was__10__to have a modern design.
At last, two__11__designers had the idea of an opening bridge. And they made it look like the Tower, so everyone was__12__. It was a wonderful success. There was so much traffic on the river__13__the bridge
