题目

The use of cars is becoming more and more popular in the twentieth century. A large number of the world's population are now able to buy and use cars. Having a car gives much mobility（活动余地）, enabling the driver to move around freely. The owner of a car is no longer forced to depend on public transport（公共交通）and doesn't, therefore, have to work in a place near his home. Instead, he can choose from a greater variety of jobs and he could change his job frequently. Travelling to work by car is also more comfortable than having to use public transport; the driver can use the 关于物体的内能，下列说法中正确的是（ ）A．温度为0℃的物体没有内能B．同一物体温度升高，它的内能一定增大C．热传递是改变物体内能唯一的方法D．温度相等的一杯水和一桶水的内能相同