本学期我们学习了很多交通工具。下面还有几种交通工具。请读一读，选一选。A. A helicopter can fly in the sky. It has a big propeller that looks like a fan.
B. A snowmobile looks like a sled. It can run fast on the snow.
C. Farmers like driving the tractor at the farm. It has solid tires that can help on the tough roads.
D. A caravan looks like a mini-bus. There is a small house in the car. You can cook and sleep in it.
E. A scooter is a vehicle with two small wheels. It looks like a bike, but faster than it.
