题干

下列关于空气的说法中,错误的是(   )

A:空气质量报告中所列的空气质量级别越小,空气质量越好

B:空气中的CO2含量过多是导致温室效应的主要原因

C:按质量计算,空气中约含氮气78%,氧气21%,其他气体和杂质约占1%

D:空气中的稀有气体一般不跟其他物质反应,曾被称为“惰性气体”

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答案(点此获取答案解析)

C

同类题5

请从(A、B、C、D、E和F)中选出符合各段意思的小标题, 并在答题纸上将相应选项的标号涂黑。选项中有一项是多余选项。

A. Decide to settle when growth is guaranteed.

B. Follow other people's paths.

C. Blame others for the fault.

D. Have faith in overnight success.

E. Only pay attention to the dreams themselves.

F. Believe someone else has the answers for you.

FIVE WAYS TO KILL YOUR DREAMS

    I dedicated the past two years to understanding how people achieve their dreams. When we think about the dreams we have, and the footprint we want to leave in the universe, it i s striking to see how big of an overlap there is between the dreams that we have and projects that never happen. So I'm here to talk to you today about five ways how not to follow your dreams.

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    You know the story, right? The tech guy built a mobile app and sold it very fast for a lot of money. You know, the story may seem real, but I bet it's incomplete. If you go investigate further, the guy has done 30 apps before and he has done a master's on the topic, a Ph.D. He has been working on the topic for 20 years. This is really interesting. I myself have a story in Brazil that people think is an overnight success. I come from a humble family, and two weeks before the deadline to apply to MIT, I started the application process. And, voila! I got in. People may think it's an overnight success, but that only worked because for the 17 years prior to that, I took life and education seriously. Your overnight success story is always a result of everything you've done in your life through that moment.

____

    Constantly, people want to help out, right? All sorts of people: your family, your friends, your business partners, they all have opinions on which path you should take: "And let me tell you, go through this pipe." But whenever you go inside, there are other ways you have to pick as well. And you need to make those decisions yourself. No one else has the perfect answers for your life. And you need to keep picking those decisions, right? The pipes are infinite and you're going to bump your head, and it's a part of the process.

____

    So when your life is going great, you have put together a great team, and you have growing revenue, and everything is set — time to settle. When I launched my first book, I worked really, really hard to distribute it everywhere in Brazil. With that, over three million people downloaded it, over 50,000 people bought physical copies. When I wrote a sequel, some impact was guaranteed. Even if I did little, sales would be okay. But okay is never okay. When you're growing towards a peak, you need to work harder than ever and find yourself another peak. Maybe if I did little, a couple hundred thousand people would read it, and that's great already. But if I work harder than ever, I can bring this number up to millions. That's why I decided, with my new book, to go to every single state of Brazil. And I can already see a higher peak. There's no time to settle down.

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   I constantly see people saying, "Yes, I had this great idea, but no investor had the vision to invest." "Oh, I created this great product, but the market is so bad, the sales didn't go well." Or, "I can't find good talent; my team is so below expectations." If you have dreams, it's your responsibility to make them happen. Yes, it may be hard to find talent. Yes, the market may be bad. But if no one invested in your idea, if no one bought your product, for sure, there is something there that is your fault. Definitely. You need to get your dreams and make them happen. And no one achieved their goals alone. But if you didn't make them happen, it's your fault and no one else's. Be responsible for your dreams.

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    Once I saw an ad, and it was a lot of friends, they were going up a mountain, it was a very high mountain, and it was a lot of work. You could see that they were sweating and this was tough. And they were going up, and they finally made it to the peak. Of course, they decided to celebrate, right? I'm going to celebrate, so, "Yes! We made it, we're at the top!" Two seconds later, one looks at the other and says, "Okay, let's go down." Life is never about the goals themselves. Life is about the journey. Yes, you should enjoy the goals themselves, but people think that you have dreams, and whenever you get to reaching one of those dreams, it's a magical place where happiness will be all around. But achieving a dream is a momentary sensation, and your life is not. The only way to really achieve all of your dreams is to fully enjoy every step of your journey. That's the best way.