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进入10月以来，北京深陷灰霾天气困扰，对空气质量问题的争论也越来越多。实际上，自1998年开始，北京实施了十六阶段的大气治理措施，治理效果在奥运之前非常明显，可奥运之后，这种改善就变得缓慢。
以下各项如果为真，最能对上述现象提供合理解释的一项是：

A.城市发展阶段不同，空气治理的难度也不同，并且在采取了初步措施后，进一步采取措施的技术难度远远大于刚开始
B.北京一直保持每年百分之十几的经济增长，新增的污染源，即使有控制，但总量还是在增长
C.目前在大气质量检测方面尚未引进PN2．5的指标，这与其他国家存在差距
D.奥运期间，进行区域的联防联控，对北京的周边省市也执行了严格的限制措施，这对北京空气质量的改善起到了很大作用

【参考答案】

A
题干现象为：北京大气治理效果在奥运前明显，之后却改善缓慢。B、C两项都不能够解释题干现象；D项奥运期间与其前......

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①他穿的是一本正经的西服，公众更愿意看到穿了T恤和大裤衩的书记，看到挤地铁的书记②市委书记应该是一个地方最让人熟悉的脸庞，这张脸庞不应该仅仅出现在电视上，出现在报纸上③尽管大家天天在电视里看到，在报纸上看到，但是缺少了生活的气息④而记者缘何能认出书记?因为记者能经常见到镜头之外的书记⑤为什么认出市委书记的仅仅是记者，而不是他身边的普通市民⑥这说明一点，电视里的市委书记和现实中的市委书记还是有区别的将以上6个句子重新排列，语序正确的是( )。

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????You must have been troubled by when to say“I love you”because it is one of the greatest puzzles in our lifE.What if you say it first and your partner doesn’t love you back? Or if they do say it but you don’t feel they mean it?Being the first to declare your love can be nervous and risky and can leave you feeling as vulnerable as a turtle with no shell. But is the person who says it first really in a position of weakness?Doesn’t it pay to hold back, play it cool and wait until the other half has shown their hand fast?“Areally good relationship should be about being fair and being equal,” says psychologist Sidney Crown. “But love is seldom equal.” All relationships go through power struggles but, he says, if a love imbalance continues for years, the trouble will setin.“That feeling of‘I’ve always loved you more’may be subverted(破坏) foratime, but it never goes away completely and it often emerges in quarreling.” In love, at least, the silent, with holding type is not always the most powerful. “The strongest one in a relationship is often the person who feels confident enough to talk about their feelings,” says educational psychologist Ingrid Collins. Psychos exual the rapist Paula Hall agrees， “The one with the upper hand is often the person who takes the initiativE.Infact, the person who says ‘I love you’ first may also be the one who says ‘I’m bored with you’ first.” Hall believes that much depends on how “I love you” is said and the motivation of the person saying it.“Is it said when they’re drunk? Is it said before their partner sets off on holiday, and what it really means is ‘Please don’t be unfaithful to me’?By saying ‘I love you’, they are really saying ‘Do you love me?’ If so, wouldn’t it just be more honest to say that?” Collins agrees that intention is everything.“It’s not what is said, but how it’s saiD.What it comes down to is the sincerity of the speaker.”What is the main idea of this passage?????A.The importance of “I love you”B.The meaning of “I love you”C.The time of saying “I love you”D.The place of saying “I love you”According to the expert, a good relationship should?be _______.A.fair and equalB.fair and kindC.powerful and equalD.confident and fairIn the first sentence the author means that _________.A.it is easy to say “I love you”B.it is hard to say “I love you”C.we have many troubles in our lifeD.people usually do not know when to say “I love you”In the third paragraph, the phrase “with the upper hand” means _________.A.being low in spiritB.having only one handC.being activeD.being passiveWhat is the most important for you to consider when somebody say “I love you” to you?A.The intentionB.The placeC.The timeD.The determination请帮忙给出每个问题的正确答案和分析，谢谢！

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