With internal combustion engines, future cars will pollute the air to a much less extent.
举一反三
- What are there types of the engine? A: electric motors B: steam engines C: internal combustion engines
- Cars are currently the major source of air (__)(pollute).
- By 1910, cars with internal combustion engines were being churned out in huge numbers at that the smaller steam car manufacturers had no chance of matching them. ( ). A: so low prices B: so prices low C: prices so low D: such low prices
- Why do electric cars produce much less pollution?
- There is far less traffic on the road and the air is much _______(fresh)