题目内容

17．In recent years an English word"infosphere"has appeared，__________the sense of"information"and"atmosphere"．（　　）
A．combineB．combinedC．combiningD．being combined

分析 句意：最近几年，出现了一个英语单词"infosphere"，此单词结合了"信息"与"气氛"两个词义．

解答 题干中的横线上可以填上which combines，关系词which在从句中充当主语，不能省略．所以选项A、B错误．
D选项being done表示一个正在进行的被动动作，而动词combine与其逻辑主语infosphere构成主谓关系，故D错误．
由句意可知，后面一个句子是修饰前面的名词infosphere，因而需要一个定语从句，而现在分词的句子可以等同于一个定语从句，所以用现在分词doing，非谓语动词combining与其逻辑主语infosphere构成一个主谓关系，所以选C

点评 此题考查现在分词的用法．非谓语动词有三种基本形式：现在分词（doing）、过去分词（done）、不定式（to do）．现在分词表示一个主动的或正在进行的动作或状态；过去分词表示一个被动的或完成的动作；不定式表示一个将要发生的动作．解题时一定要判断好动词与其逻辑主语的关系，动作所处的状态．

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"Oh, my God! Did I really just send that text?" Most people have said something that they wish they could take back. And if they had paused to think about it first, they probably would have acted differently. Pausing doesn't pay off just when you speak. Scientific studies have shown that making a habit of pausing before you do something can actually have a big impact on how your life turns out.

In making decisions we rely on two areas of the brain. One area creates and processes emotions; the other governs logical thought. The type of decision, how we feel about it, and how prepared we are to handle it help determine which brain area has the most influence.

But our age also plays an important role. Thinking through the consequences of one's actions is actually harder for teens because the area controlling logical (逻辑的)thought is not fully developed until around age 25. This is why teens often feel an intense emotional drive to act impulsively(冲动地)---it's how their brains are structured! Though this tendency to act without considering the outcomes can lead to problematic situations, impulsivity during the developmental years evolves because it makes teens more open to new experiences and ideas. This openness helps teens to become independent adults.

The key to making impulsivity work for you instead of against you is to train your brain by practicing pausing. This doesn't mean you stop taking risks or being open to new experiences. But you won't know if the risk is worth it until you think it through. Deciding to take a risk based on logic shows self-control, not impulsivity.

What are different ways to pause? You might take a deep breath, count to 10, or ask "Is this worth it?" different strategies work for different people. Whatever works for you, keep doing it! By practicing pausing, you can actually change your brain. This means that over time, pausing, instead of immediately reacting, becomes your "natural" response.

And with this change, people are on their way to enjoying the life rewards that come with high levels of self-control---even if they weren't natural-born pausers!

1.What challenges teenagers?

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