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In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
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Article: For a long time people have believed that high self-esteem is the key to success. However, new research shows that focusing just on building self-esteem may not be helpful. In some cases, having high self-esteem can bring bad results if it makes you less likeable or more upset when you fail at something. "Forget about self-esteem," says one of the psychologists involved in the new research. "It's not the most important thing." This idea may sound a bit strange to you because studies also show that people with high self-esteem are less likely to be anxious, shy, or lonely than those with low self-esteem. In short, to feel good does you good. But, after reviewing about 18,000 studies on self-esteem, Roy Baumeister, a psychologist at Florida State University, has found that building up your self-esteem will not necessarily make you a better person. He believes that violent and evil people often have the highest self-esteem of all. He also said, "There's no evidence that kids with high self-esteem do better in school." All types of people have problems. "People with high self-esteem can have big egos that can make them less likeable to their peers," said Kathleen Vohs, a psychology professor at Columbia University. "People with high self-esteem tend to think more of themselves," Vohs says. People with low self-esteem are more likely to rely on their friends when they need help. Researchers say it is best to listen to and support other people. Find positive ways to contribute to society. If you fail at something, try to learn from the experience. The best therapy , as they suggest, is to recognize your faults, accept yourself, understand your weaknesses and then do something about them.
Answer: New research shows that high self-esteem may not be helpful.
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What's the passage mainly about?

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Article: Science Daily (Apr. 27, 2008)-- Dutch ecologist Roxina Soler and her colleagues have discovered that subterranean and aboveground herbivorous insects can communicate with each other by using plants as telephones. Subterranean insects issue chemical warning signals through the leaves of the plant. This way, aboveground insects are warned that the plant is already "occupied". Aboveground, leaf-eating insects prefer plants that have not yet been occupied by subterranean root-eating insects. Subterranean insects send out chemical signals through the leaves of the plant, which warn the aboveground insects about their presence. This messaging makes it possible for spatially-separated insects to avoid each other, so that they do not compete for, the same plant. In recent years it has been discovered that different types of aboveground insects develop slowly if they feed on plants that also have subterranean insects and 'vice versa . It seems that a mechanism has developed through natural selection, which helps the subterranean and aboveground insects to communicate with each other. This avoids unnecessary competition. Through the "green telephone lines", subterranean insects can also communicate with _ , namely the natural enemy of caterpillars . Parasitic wasps lay their eggs inside aboveground insects. The wasps also benefit from the signals sent by the leaves, as these help them find more insects for their eggs. The communication between subterranean and above- ground insects has only been studied in a few systems. It is still not clear how widespread this phenomenon is, say the researchers.
Answer: By sending signals through the leaves.
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How do subterranean and aboveground insects communicate with each other?

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Article: China Daily Classified Page Advertising Rates Published every Wednesday and Friday. Minimum(smallest)Size: 1 col x3 cm Personal: RMB 100 yuan/cm -Engagements, Marriage, Births, Deaths, Obituaries, Funerals, Birthday greetings, Holiday greetings, Anniversaries Shopping Guide: RMB 100 yuan/cm -Department store and supermarket shops only Education: RMB 100 yuan/cm -Vocational training or courses for foreigners offered by universities and colleges Services: RMB 120 yuan/cm -Computer service, Business centers, Interior decoration, Cars for lease, Used cars wanted/for sale, Business offices wanted, Travel, Restaurants and entertainment Recruitment: RMB 140 yuan/cm Property, Trade and Investment: RMB 170 yuan/cm -Merchandise wanted/for sale, business/capital solicited Legal & General Notices: RMB 170 yuan/cm -General and legal announcements, Auctions, Lost & Found, Changes of address Surcharges: 30 col x cm plus 20%, Half page 40%, Full page 50% All art or production fees(charges)carry a surcharge 1.China Daily reserves the right to make any alterations it seems necessary and to reject advertisement which violates(breaks)the Advertisement Law of the People's Republic of China or contains fraudulent, deceptive, or misleading statements or illustrations . 2.Advertisers who wish to insert an ad should submit (put forward)an Advertising Order Form with all advertisement information and any necessary documents 10 days before the date of publication. After this deadline, additional charges will be incurred (brought upon oneself). Tel : (86 - 10)64941104, 64924488 ext. 2117 Fax: (86 - 10)64941104 E- mail: cads @ chinadaily. com. cn
Answer: Recruitment
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Which of the following advertising rates is the lowest?