文章：
There are all kinds of trains in the world.There are trains to carry people,trains to carry animals and trains to carry things.
There are fast trains and slow trains.Some trains go under the ground and some trains go through hills.
In big cities,the streets are usually very busy.So you can find trains under the ground and trains on a rail above the streets.They carry people in and out of the city.
Can a train run over water?Yes,it can.There are many beidges over the river.The trains can easily run over the water.But it is noteasy to build bridges.
Today's trains have diningrooms for people.You may eat something on the way if you are hungry.
Trains are useful to men,women andchildren.Many chidren havemodle trains.With the modle trains they can build their own rails enjoy the wonderful world of trains.
( )1.There are _____kinds of trains in the world.
A.a few B.many C.some D.little
( )2.Usually people like taking_____.
A.fast trains B.slow trains C.trains to carry people D.trains to carry animals
( )3.In_____cities,the streets are usually busy.
A.small B.middle C.large D.tiny
( )4.The underground trains carry people_____.
A.in and out of big cities B.from big cities to small towns C.from small towns to big cities D.in and out of countries
( )5.Many children can enjoy the wonderful world of trains because they_____.
A.have real trains B.have modle trains C.often take trains
D.have real rails