阅读下面短文,根据短文内容,从题中所给的A、B、C、D四个选项中,选出最佳答案。
A city without cars would be very strange,
right? But Venice is such a city.
Venice is in the northeast of Italy. It wasn't built on land, like
Beijing or Shanghai, but on more than 110 islands. Seawater is everywhere
around the city.
Even so, travel isn't difficult. The waterways
have always been the best ways to get around. There are 117 waterways and more
than 400 bridges that can guide you where you want to go. People in
Venice move from place to place by boat. They like to enjoy the scenery and
cool summer nights while taking boat trips. They can talk to other people as
they go along.
Venice grew out of small islands in
saltwater lakes when some Italians escaped from a war more than 1,500 years
ago, and built homes there.
Water makes the city special, but it is also
a big problem.
Once, people used too much underground
water. This made the city get lower little by little. Now the city has gone
down by 23 centimeters. Another problem is the rising seawater. The temperature
has risen over the years. This has made the ice of the Arctic Ocean (北冰洋) melt (融化).
Every year, high waters hit the city in
autumn and winter. When a lot of water comes, more than half of the city is
underwater.
Scientists are trying different ways to stop
the city from getting even lower.