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nts. Tusks are important and play a number of roles, especially for male elephants, including fighting with other males, lifting and digging things up.This is why scientists hope there can be other ways to protect elephants against hunters. They believe that when they are less likely to be killed , elephants will be able to grow tusks again.To David Cowdrey, head of Policy and Campaigns at the International Found for Animal Welfare UK, however, this is not very likely to happen in the near future.“Unfortunately, it es down to the markets,” he told The Guardian. “As long as people will pay high prices for products that e from endangered animal and plants, they’re going to have price on them and that causes the hunting.”27. Which of the following is TRUE according to the passage?A. Elephants learned to lift and dig things up without tusks.B. Elephants chose not to grow tusks because of their dangerous environment.C. Elephants with no tusks had a greater chance of passing down their genes.D. A tuskless elephant gives birth to more baby elephants than an elephant with big tusks.28. The underlined word “evolution” in paragraph 4 means “_________” ?A. gradual change B. sudden development C. plete loss D. rapid growth29. What can you learn from the last two paragraphs?A. We should work out a better solution to protect elephants.B. People should pay lower prices for products made with elephant tusks.C. Elephants’ living environments will soon be improved.D. The key to elephant protection is stopping the trade in tusk products.DJust like rice and noodles are different from bread, snacks in China are a world apart from those in the UK and the US. For one thing, I never imagined that sunflower seeds(瓜子) would be so popular here. I spotted people having them while waiting for tables outside restaurants, before dinner and, of course, while watching TV. I also saw that a plate of sunflower seeds is always on offer during the Spring Festival holidays.I had seldom tried sunflower seeds when I came to China. In the UK, though, young people love their snacks. In fact, young people in Britain eat more snacks than people of the same age in other European countries. A recent survey has discovered that 64 percent of under 20yearolds snack between meals, according to an article on the British Council website. In parison, percent of young people snack in Germany, 53 percent in France, and only percent in Spain.British snacks are generally unhealthy. Our favorites are probably potato chips, which we call crisps, and chocolate bars. From a very young age, we always looked forward to our crisps and chocolate bars after school, perhaps even included with sandwiches and fruit in our school lunches that our parents made for us.Snacks are also popular in the US. One of the things that I found the most extraordinary(特別的) when I first visited the US was the number of snacks in their supermarkets。I was in the most beautiful city in the world, yet I only wanted home.It was an amazing week for my husband and me ——the trip of a lifetime. Months ago, when my husband told me that he would have a meeting in London. I expressed my 13 to go to Europe together with him. Then we asked his mother to look after our two children and started off.During the week’s time, we visited Lon