[A]the marketing of products for children

[B]the observation of children's nature

[C]researches into children's behavior

[D]studies of childhood consumption

29.We may learn from Paragraph 4 that department stores were advised to_____.

[A]focus on infant wear and older kids' clothes

[B]attach equal importance to different genders

[C]classify consumers into smaller groups

[D]create some common shoppers' terms

30.It can be concluded that girls' attraction to pink seems to be____.

[A] clearly explained by their inborn tendency

[B]fully understood by clothing manufacturers

[C] mainly imposed by profit-driven businessmen

[D]well interpreted by psychological experts

Text 3

In 2010. a federal judge shook America's biotech industry to its core. Companies had won patents for isolated DNA for decades-by 2005 some 20% of human genes were parented. But in March 2010 a judge ruled that genes were un