4. Global warming and cooling effect of pollution. Pollutants can cool the world because they can interact with the cloud to form the rain 0droplets. Night temperatures have increased while day temperatures remain stable (one question asking you why?). However, the cooling effect is complex. For example, temperature is higher on snow surface than on the ice surface (one question asking you why the author mentioning ice surface). The conclusion is that pollution masks the global warming effect. If stop pollution now, the cooling effect will be finished immediately but the global warming is long term effect and will continue so the global temperature will increase substantially. (very strange no question on conclusion)
5. Union / Africa American relationship. The key topic in this article is that whether second world war has improved the relation or not (one question about it). One point of view considered yes but another side said no (the union always kept its status quo biased to the white people). The author considers that two sides are not consultable and the history reality is not reducible to either (one question on this). The author also proposed a dilemma about the union. To keep the status quo or to be inclusive (more black people). One question is about the context of this article.
6. Women and politics. Traditional view excludes women in political research. Recently some new points of view have been developed (one question here). Some think women should be considered in the political analysis and especially linked to the social role or sth.... Another lady considers women has role in political partison. She thinks at beginning women are part of a party although the party does not give too much importance to them because women need an established party to express their views. But since no party gives too much shit to them (one example that one party famous for tolerant to women but still it failed to give priority to women—one question on this), women became frustrated and organised their own party.
7. IT in business. Very easy article. It’s about huge investments in IT but no positive results on the business. The author argues why this paradox happens and one theory is that only technology which is in advance and can not be copied is the key to success. And obviously IT does not belong to this category because IT is accessible to everyone.