Lesson 3 our animal friends
Warm-up 短文填空
The Tower of Pisa is one of _________ beautiful bell towers in Italy. It is ________ beautiful,
but also strange – it leans to one side. Today it is known _________ “the Leaning Tower of Pisa”. The ________ of the tower began in 1173. It took _________ 200 years to complete. In 1178, when the building got to the _________ floor, it started to lean. The builders tried to _______ the tower straight again when they built the upper floors, _________ failed.
Over the years, the tower has ________ to lean further. Expert have done a lot of studies and tried to “rescue”
the tower. In 1990, it was closed to the public ___________ safety reasons. After a lot of effort, it reopened 2001. Hopefully it will be safe for at least the next 300 years.