阅读短文，选择正确答案。
Many people like to travel (旅行) by plane, but I don't like it because an airport is usually far from the city.
You have to get there early and wait for hours for the plane to take off (起飞) and it is often late. You can't open
the window. You can't choose the food. Planes are fast, but they still take hours to get out of the airport and into
the city.
I like traveling by train. I think trains are safe. Railway stations are usually in cities. When you can't catch a
train, you can catch another one. You can walk around in the train and open the windows. You can see many
interesting things on your way. I know it takes a little more time.
I also like cars. You can start your journey (旅行) when you want to, and you don't need to get to a railway
station or a bus stop. Also you can carry many things with you in a car. But sometimes there are too many cars
on the road.
1. Why do many people like to travel by plane? [ ]
A. Because it is fast.
B. Because you can walk around in the plane.
C. Because it is safe.
D. Because you can carry many things in a plane.
2. Which is not the good thing about the train? [ ]
A. It is safe.
B. It takes a little more time.
C. You can open the windows.
D. You can choose the food.
3. If you want to take a lot of things with you, what do you take to go out? [ ]
A. A bus.
B. A car.
C. A train.
D. A ship.
4. What is the bad thing about the car? [ ]
A. You needn't go to a station.
B. You can start your journey when you want to.
C. There are too many cars on the road.
D. You have to wait for a long time.
5. What does the writer think of the plane, train and car? [ ]
A. He likes to take a train because it takes a little more time.
B. He likes to take a car because he has a car.
C. He doesn't like traveling by plane because he can choose the food on the plane.
D. He thinks it takes a lot of time to go to and get out of the airport.
个; 第二类是千位为2 ,百位比3小为0,有
个; 第三类是十位比4小为0,有1个.共有6+2+1=9个,所以12340是第10个数.