题目

题型：不详难度：来源：

Most Americans would find it hard to think that what life   小题1:          
would look like without a car. But, some have realized                         小题2:          
the serious question of the pollution caused by the car.                         小题3:          
The polluted air becomes harmful and dangerous to health             小题4:          
One way to getting rid of the polluted air is to build a             小题5:          
car that doesn’t cause pollution. That is how several of the          小题6:          
large car factories have been tried to do. But to build               小题7:          
a clean car is more easier said than done. Progress in this           小题8:          
field has been slow.
Another way is to take place of the car engine by a                      小题9:          
steam one. Inventors are now working on steam cars as well as
electric cars. Many makers believe that it will spend                 小题10:          
years to develop a practical model that pleased people

答案

小题1:去掉that           
小题1:But→ However
小题1:question→problem
小题1:.∨
小题1:getting→get
小题1:how→what           
小题1:tried→trying
小题1:去掉more
小题1:take和place之间加the
小题1:spend→ take

解析

略