Article: Half the world's population could face a shortage of food by 2100 due to climate change, a new report by US scientists warns. Rapid global warming is likely to reduce crop production in the tropics and subtropics , according to Professor David Battisti of the University of Washington. "The most extreme summers of the last century will become common," he says. "We must immediately create crops that can bear heat and drought if we are to adapt in time," he writes in Science journal. "The stresses on global food production from temperature alone are going to be huge," said Mr. Battisti. "And that doesn't take into account water supplies stressed by the higher temperatures." He worked with Professor Rosamond Naylor on Food Security and the Environment, to examine the influence of climate change on the world's food supplies. They predict there is a greater than 90% probability that by 2100, the average growing-season temperatures in the tropics and subtropics will be higher than any temperatures recorded there to date. "We are taking the worst of what we've seen historically and saying that in the future it is going to be a lot worse unless there is some kind of adaptation," said Professor Naylor. "This is a powerful reason for us to invest in adaptation, because it is clear that this is the direction we are going in terms of temperature and it will take decades to develop new food crop varieties that can better bear a warmer climate." "In the tropics, the higher temperatures could be expected to cut production of the primary food crops by 20-40%," the researchers said. Rising temperatures are also likely to reduce soil moisture , cutting production even further. Three billion people live in the tropics and subtropics now, and their number is expected nearly to double by the end of the century. "You are talking about hundreds of millions of additional people looking for food because they won't be able to find... Question: We can know from the text that _ . Yes or no, is the answer "crop failures will be a global problem"?
No

Article: Are there any foreigners in your city? How do you address them in English when you want to talk to these foreigners? The following may be some simple rules the beginners should follow. 1. When talking to strangers there is often no special form of address in English. In most cases, if you want to catch the attention of a stranger it is necessary to use such phrases as "Excuse me". 2. In British English "Sir" and "Madam" are considered to be too formal for most situations. They are used mostly to customers in shops or restaurants .While in American English "Sir" and "Madam" are not so formal and are commonly used between strangers, especially with older people whose names you don't know. 3. When you talk to some people you know, you can use their names directly. If you are friends, use their first names; if your relationship is more formal, use "Mr.", "Mrs.", "Ms.", etc, before their family names. 4. There are many other forms of address which can be used between friends and strangers. However, many of these are limited in use. For example, "pal" and "mate" can be used between strangers, but are usually only used by men talking to other men. If you meet foreigners, do remember not to address them in wrong ways. Question: According to the passage, "Excuse me" is mainly used to _ . Yes or no, is the answer "catch the attention of a stranger"?
No

Article: A disastrous competition is going on in England, with billions of dollars and hundreds of lives in danger. OK, that's not true. But competitors from around the world gathered on Thursday to compete for the title of 2012's World's Biggest Liar. Each participant is given up to five minutes to make up the best lie in the competition, which was started in honor of 19th-century Bridge Inn owner Will Ritson, who was reportedly famous for his lies. Competitors gather at the Bridge Inn every year for the competition, a small pub in northwestern England. Anyone can take part in the competition. Well, almost anyway; the reporters note that lawyers and politicians are banned, who is said to enjoy "an unfair advantage" in the proceedings . A study published this past July in the journal Evolution & Human Behavior found that nearly all lies are detectable through visible facial muscle reactions in the person telling a lie. "Thus, while interpersonal deception often is highly successful, signs of hidden emotional states are communicated clearly to the informed observer," the study concluded. A churchman of Carlisle reportedly holds what may be the greatest lie of all time in the competition, simply stating, "I have never told a lie in my life." In 2003, Abrie Krueger of South Africa became the first non-Brit to win the competition. Ironically, Krueger was accused by some of cheating. In 2006, comedian Sue Perkins became the first female to win the competition, telling a tale about people riding camels to work as a result of climate change. Last year's winning entry came from Glen Boyland, who told a lie about competing in a snail-racing competition with Prince Charles. Question: The competition is held at the Bridge Inn because _ . Yes or no, is the answer "it once had a good liar as its owner"?
Yes