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Electric cars may seem to be a recent invention, but they have been around for years. In the early 1900s, there were more electric cars on the road （1）t＿＿＿＿ gasoline（汽油）cars. At that time, gasoline was expensive compared with other fuels（燃料）, so electric cars were more popular.

When gasoline prices （2）d＿＿＿＿ and new technologies on gasoline cars were developed, electric cars were out of date. Gasoline cars became more popular （3）i＿＿＿＿.

During the 20th century, gasoline cars got bigger, （4）＿＿＿＿（heavy）and faster. More and more people had bought gasoline cars. More fuel was needed. So this （5）c＿＿＿＿ more air pollution. When people began to （6）r＿＿＿＿ that there were not enough oil on the earth, they required car （7）＿＿＿＿（make）to produce more efficient（高效能的）cars.

One method of （8）＿＿＿＿（solve）the problem was a “hybrid” car, one that ran partly on gasoline and partly on electricity. Hybrid cars became popular in the 2000s because gasoline prices went up while prices of hybrid cars went down.

An all-electric car uses no gasoline. （9）H＿＿＿＿, the problem is that electric cars are not suitable for long journeys. Many people are not pleased with it. The government and the car factories are working together to develop safe, cheap and （10）＿＿＿＿（use）electric cars. When more and more people have these electric cars in the future, a gasoline station may disappear.