Nowadays, it is very for us to live a low-carbon life. The first thing we can do is bikes instead of driving cars. First, bikes are than cars and everyone can afford it .Second, it’s easier parking places for bikes. Third, the petrol is not necessary for bikes, so bikes won’t produce dirty air to make pollution to our environment. Finally, we can ride bikes to keep Let’s ride bikes instead of driving cars to protect the environment! 小题1: A．importance B．easy C．difficult D．important 小题2: A．ride B．rides C．riding D．rideing 小题3: A．much cheap B．much cheaper C．much dearer D．smaller 小题4: A．to find B．find C．look for D．find out 小题5: A．fast B．slowly C．easy D．fit.