Venice （威尼斯） is in the north-east of Italy.It attracts more than three million （A） tourists from all over the world every year.
   Venice is a city of water （B） ________ it is built on 117 small islands in a saltwater lake along the Adriatic Sea（亞德里亞海）.The city has （C） more than 400 bridges to connect all these islands.
   The city also has more than 177 canals （運(yùn)河），so nobody can drive a car in Venice.Without the noise and pollution from the cars， （D） Venice is among the most comfortable and quietest cities in the world for tourists.Then how do people move around the city？They have to walk around （E） ________ themselves，or they can take a ride in the famous local boat——the gondola.In the past，（F） 它是出行的唯一方式.Now it's mainly （主要地）used by tourists to see this beautiful city.
   Tourists can also take part in the Venice Carnival（狂歡節(jié)） in April or the Venice Film Festival in August to get a taste of this famous city on the water.

（1）寫出文中劃線部分（A）和（C）的同義詞或近義詞。

visitors

visitors

；

over

over

（2）在文中（B）和（E）的空白處分別填入適當(dāng)?shù)膯卧~。

because

because

；

by

by

（3）將文中劃線部分 （D） 改寫為：Venice is

one

one

of

of

the most comfortable and quietest cities in the world for tourists.
（4）將文中劃線部分（F）譯成英語。

It was the only way to travel in Venice.

It was the only way to travel in Venice.

（5）從文中找出能說明本文主旨大意的中心詞。

water

water