High in the sky, a group of birds fly past. The 5-foot-tall creatures are whooping cranes, the tallest birds in North America noted for its loud call. The wild animals appear to be following much larger birds. But those aren't birds at all. They are three-wheeled aircraft called trikes , and the pilots flying them are wearing white helmets and white gowns. That plan might sound like a stupid idea, but it's not. The pilots are from an organization called Operation Migration. They are helping the whooping cranes learn to migrate, or move from one area to another when the seasons change. The cranes are endangered. In 1941,the species had dwindled to roughly 20 birds because of hunting and habitat loss. US wildlife officials counted 149 whooping cranes in November 1995,the most since the American government began taking censuses in the 1930s.Today,about 380 remain. In the fall, whooping cranes are supposed to migrate south. However, many of them don't know how. "With so few birds left, young whooping cranes typically don't have parents around to teach them," explains pilot Joe Duff. That's where the trikes come in. Each October, pilots dress up as whooping cranes and take to the skies in Wisconsin. The young birds follow them because they think the trikes are big whooping cranes. It takes about three months to reach south--with plenty of rest stops on the way. The pilots lead the cranes to refuges, or protected areas, in Florida. This spring, the birds will migrate north by themselves--no trikes needed! "It's nice because you know the birds are going to make it," Duff told WR News. According to the passage, which of the following is TRUE? . A) Whooping cranes are famous for their height. B) The pilots wear helmets and gowns to attract people's attention. C) Whooping cranes want to migrate north in the autumn. D) Whooping cranes will migrate on their own this spring.
D
A couple of years ago, those who forecast that oil price would reach $ 100 a barrel were seen as doomsters. However, now some are predicting $ 200 a barrel. Had economists been told that oil price would barely pause at $ 100 before reaching the recent peak of nearly $ 127, they would no doubt have forecast terrible economic consequences. But the global economy, though interrupted by the high price of energy, is still chugging along. Meanwhile, inflation has picked up, but the headlinerates of inflation in most developed countries are nowhere near the levels seen in the 1970s and 1980s. There are three explanations for the oil price's unclear impact. The first is that nowadays developed economies are more efficient in their use of energy, thanks partly to the increased importance of service industries and the diminished role of manufacturing . According to the Energy Information Administration, the energy intensity of America's GDP fell by 42% between 1980 and 2007. A second theory is that the oil-price rise has been steady, not sudden, giving the economy time to adjust. Giovanni Serio of Goldman Sachs points out that in 1973 there was a severe supply shock because of the oil embargo , when the world had to cope with 10%-15% less crude almost overnight. Not this time. The third explanation turns the argument on its head; rather than oil harming the global economy, it is global expansion that is driving up the price of oil. The most important factor is the shift in favor of the developing economies. America has responded to high price in familiar fashion: UBS forecasts that demand will drop by 1.1% this year and will be no higher in 2010 than it was in 2004. But the demand from China and other emerging markets is more than offsetting this shortfall. How many explanations for the oil price's impact are mentioned in the passage? A) Two B) Three C) Four D) Five
B
Q: One morning, Charley, a little green frog, was sitting in a pond by the side of the road. Wanda, the neighborhood witch , was walking along the road. She was a good witch and dreamt to become a fairy godmother who can save people from trouble with magic powers. Wanda had been learning fairy godmother magic for 103 years. That morning, she decided to try the magic she had learned and bring happiness to others. Seeing Wanda, Charley cried, "Hi, Wanda." "Hi, Charley," replied Wanda, "I have a surprise for you." Then, Wanda waved her wand , said a magic word, and Charley turned into a prince! When Charley-turned-prince looked at himself in the water, he cried, "Hey! You turned me into a prince! It's a surprise all right, but I don't want to be a prince! Change me back right now!" "Oh, dear," Wanda said. "you shouted so loud that I forgot the way to change you back. But who wouldn't rather be a prince?" "I wouldn't!" cried Charley. "I want to be a frog!" He stuck out his tongue, missing a bug flying by the end of his nose. "Look at that, Wanda! I was a good fly catcher. But now, this tongue is too short! Please change me back!" "I can't, Charley. But you'll learn to be happy as a prince." She waved her wand, and suddenly a castle appeared. Out of the castle dozens of musicians were playing various instruments. "Charley! You'll have servants, eat delicious foods, and you can sing and dance and snap fingers ." "No!" Charley interrupted. "I don't want all these! I want bugs!" Charley cried. "I don't want to sing and dance! And why would I do something as silly as snapping my fingers?" "Snapping fingers!" cried out Wanda. "That's what I forgot!" She snapped her fingers, cried "Upsi-doodle!" and the castle and musicians disappeared and the prince became a little green frog." Charley looked at himself in the water. " _ , Wanda. Oh, happy day! I'm a frog." "I must apologize, Charley," Wanda said, "you are a happy frog. I should know this a moment ago." After the little green frog became a prince, he _ . A) was grateful to Wanda B) Wanted a great palace C) couldn't recognize Wanda D) became angry with Wanda
A: D