Article: You might say that Barack Obama was elected President of the US because he knows how to give a speech. In 2004, the little-known Obama gave a speech at the Democratic National Convention . It was a great speech -- poetic, and inspiring. The people who heard it would remember it for a long time. Since 2004, Obama has written and delivered thousands of speeches. There are usually praised for two reasons: he treats the audiences like intelligent adults, and he is able to express complicated ideas in a straightforward, natural way. Before becoming President, Obama was a lawyer, a college professor, and a successful writer - his two memoirs have become best sellers. The skills he needed to succeed in his previous jobs have also contributed to his success as a speechmaker. As a lawyer, Obama learned how to make strong, convincing arguments. As a professor, he learned how to explain complex subjects in ways that helped students understand without boring them. As a writer, he learned how to use languages to have a powerful influence on his audience. A famous American musician even turned one of Obama's early speeches into a song during the election campaign. Secret weapons of Obama Writing team: Obama has a team of people who write his speeches. The writers chat with Obama for hours about what he wants to say. Then listen to recordings of past presidential addresses and seek advice from advisers. Obama usually edits and rewrites the drafts several times. Make fun of the guests: Obama starts his speech by gently making fun of his guests. His opening lines attract the audience's attention while giving them an opportunity to relax and laugh at themselves and each other. Make fun of himself: Obama laughs at his past mistakes and is never afraid of showing them to the public. Obama delivers speeches to audiences large and small. He can make his audiences laugh or cry. His speeches are always thoughtful, well written and just right for each occasion. Question: When delivering a speech, Obama _ . Yes or no, is the answer "sometimes shares a joke with the audience"?
No

Article: Several animal species including gorillas in Rwanda and tigers in Bangladesh could risk extinction if the impact of climate change and extreme weather on their habitats is not addressed, a UN report showed on Sunday. Launched on the sidelines of global climate negotiations in Durban, the report by the United Nations Food and Agriculture Organization shows how higher temperatures, the rise in sea levels, deforestation and excessive land use have damaged the habitats of certain species, especially in Africa. "Many ecosystems have already been stressed by increasing population, historical and recent deforestation, unsustainable management practices and even invasive species," Eduardo Rojas-Briales, assistant director general at the FAO's forestry department, said at the launch of the report. The most affected areas include mountains, isolated islands and coastal areas, which limit the possibilities for animals to migrate elsewhere and create new habitats. "The remaining populations become surrounded in very small ecosystems, they have inbreeding problems ... and at the end these species may disappear," he added. Other examples of affected animals included elephants in Mali, lions in the Serengeti and crocodiles in Malawi. The report said an estimated 20-30 percent of plant and animal species will be at higher risk of extinction due to global warming and a significant proportion of native species may become extinct by 2050 as a consequence. Other consequences could include the spread of invasive species and infectious diseases, it said. The report urges more focus on restoration of damaged ecosystems, especially those key to dealing with climate change such as mangroves , inland waters, forests, savannahs and grasslands. The FAO also called for the creation of migration corridors for animals in areas where their movement was limited. The organization said while more resources were flowing to biodiversity conservation, more action at the government and policy level was needed. It also urged local communities... Question: Why are animals living in mountains, islands and coastal areas most affected? Yes or no, is the answer "They have little chance of moving to other places."?
No

Article: It's hard to track the blue whale, which has almost been killed off by commercial whaling. Attaching radio devices to it is difficult and visual sightings are too unreliable to give real insight into its behavior. So biologists were delighted early this year when, with the help of the US Navy, they are able to track a particular blue whale for 43 days recording its sounds. This was possible because of the Navy's former top secret system of underwater listening devices across the oceans. Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential enemies. Earth scientists announced at a news conference recently that they had used the system for closely observing a deep-sea volcanic eruption for the first time and that they planned similar studies. Other scientists have proposed to use the network for tracking ocean currents and measuring changes in the ocean and global temperatures. Different layers of ocean water can act as channels for sounds focusing them in the same way a stethoscope does when it carries faint noises from a patient's chest to a doctor's ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles. Question: What can we infer from the passage? Yes or no, is the answer "Military technology has great potential in civilian use."?
Yes