--- Why do more and more people start to use new types of energy？--- Because they cost_____and are good for the environment.

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--- Why do more and more people start to use new types of energy？--- Because they cost_____and are good for the environment.

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Why do you insist on________

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1.????? How are marketing and selling different? Which do you prefer and why? You are expected to write a paragraph of about 120 words.

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though women who gave themselves a low score did actually weigh more than others with higher scores on this trait.These findings held across all of the ethnic groups included in the study.While some links are unsurprising（eg.conscientious people stick to their diets）,some are not so easy to explain.Why,for example,do extrovcrted men weigh more?Is it because theyre always in the pub?If so,perhaps thebeer goggleeffect explains why they rate themselves as taller and thinner than they actually are.

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ummit in Scotland where the leaders of the world’s richest nations will debate what they can do to help some of the world’s poorest. Africa is the priority and the politicians will discuss reducing the debt burden, ending trade regulations which put the continent’s economy at a disadvantage, and giving more aid. Mark Doyle, who’s reported from Africa for many years, looks at why aid is necessary, and why much of what’s been donated in the past has not worked.　　All around the edge of Africa-along

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