题型：阅读选择 题类：真题 难易度：普通
重庆市2021年中考英语真题试卷（A卷）
Historically, most cars have run on gasoline (汽油), but that may change in the future: cars can also run on other liquid fuels (液体燃料) and electricity.
Gasoline is from oil. The energy in gasoline comes from hydrocarbons (碳氢化合物) Gasoline provides great power for cars. However, it causes environmental problems, like air pollution and temperature rise. So gasoline can't be the best fuel.
Another choice is electricity. Electricity cars can be as efficient (效能好的) as cars using gasoline, And they produce less pollution. But electric cars themselves are more expensive. Good news is that the cost has been lower and there are more and more places for the cars to get electricity ever since 2010.
The other choices are other liquid fuels. Many of these can be stored in the same places as gasoline, and used in the same cars. They can also be friendly to the environment.
One way to make such fuels is to get CO2 from the air and put it in water. Through chemical reaction, hydrocarbons can be created. However, these fuels take up more space.
Another way is to make such fuels from plants which take in carbon from the air. These fuels are greener in use. But not all of them can be as efficient as gasoline.
For a fuel to be the best, people have to be able to afford it. Unluckily, almost every green technology is more expensive than that of using gasoline. Governments and car producers are doing everything they can to cut down the costs. In the end, the best fuel will be both affordable for car users and green for our planet.
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| I'm in trouble. Last week，we had a football match，and we lost. We played well，but one teammate didn't do his best，I think. It was like he wasn't even on the field!Disappointed by what he did，I said all this to my best friend to let out my anger. But he told everyone else what I'd said. I'm really angry with him. What should I say to him？And should I say something to my teammate？ | |
| Reply There is an old American saying， "Loose lips sink ships. "This means that if you speak too much about something，especially to people who you don't know so well，it'll cause all kinds of trouble. Maybe now you're in this situation. 13 likes | |
| Reply I was at the game and you did your best. I think it was awful of your teammate not to try his best. You know，teamwork，is very important. If you play，play it well!But I don't think it's OK to talk behind his back because it might hurt his feelings. Maybe there is a better way to solve the problem. 25 likes | |
| Reply In my view，no secret is safe. It's natural for your friend to tell others about what you're sharing. This is how we keep close to each other in a group. So，learn the lesson. Next time，keep it to yourself. 10 likes | |
| Reply I understand why you were angry with your teammate. A successful team requires everyone's effort. But what you did doesn't actually help. Next time in the same situation，try to communicate with your teammate directly and honestly. Besides，when filled with anger，you would say whatever comes to your mind. And that might hurt others. Take a deep breath，calm down，and always remember：think first，speak later. As for the problem with your friend，tell him you're angry because what he did made the situation worse. 30 likes | |
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Childhood memories are unforgettable. The first bicycle ride, the first {#blank#}1{#/blank#} in the pool, and the beautiful wallpaper are deeply planted in our minds. But can they be trusted? In other words {#blank#}2{#/blank#} reliable (可靠的) are our memories?
In a study in 2024, Peterson and his team {#blank#}3{#/blank#} children ages 4 to 13 about their earliest memories and re-interviewed them two years later. They found that events {#blank#}4{#/blank#} feelings were easier to stay. Besides, if the child had a {#blank#}5{#/blank#} memory rather than a confused (模糊的) one, he might remember it better.
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