【正文】 nty five Of age. of education has little to do with the crime rate. in state laws for death penalty also account for the increase of crime rate . smuggling is the only product of too many shows and report.54. The author is worried about the fact that _____. may imitate what they have seen or read about crimes. B. the more prosperous the United States is, the higher the crime rate bees. C. citizens carrying guns will be punished. D. all the state laws will provide death penalty in future. underlined word “penalty” is closest in meaning to_____. A. punishment C. accusation Task 3We know that many animals do not stay in one place. Birds, fish and other animalsMove from one place to another at a certain time. They move for different reasons。most ofThem move to find food more easily, but others move get away form places that are too Corwded. When cold weather es,many birds move to warmer places to find food. Some fishes Give birth in warm water and move to cold water to feed. The most famous migration(遷移)Is probably the migration of the fish, which is called “salmon”.This fish is born in fresh Water but it travels many miles to salt water. Then it gives birth and dies there. In northernEurope, there is a kind of mouse. They leave their mountain homes when they bee tooCrowded. They move down to the low land. Sometimes they move all the way to the seaside,And many of them are killed when they fall into the sea.Recently, scientists have studied the migration of a kind of lobster(龍蝦). Every year,When the season of bad weather arrives, the lobsters get into a long line and start to walk Across the floor of the ocean. Nobody knows why they do this, and nobody knows where They go .So, sometimes we know why humans and animals move from one place to another, But at other times we don’t. Maybe living things just like to travel.56. The majority of animals migrate for______. A. place B. safety C. Food 57. Salmon is known as a creature spending most of its life in _______. are short of food is not enough space ’s getting warmer in the low land ’s getting coldier in the mountains58. The reason why the lobsters migrate is _______. A. the bad weather B. the depth of the oceanC. scientist’lack of interest D. unkown60. The passage is mainly about _______.A, living things on the moove B. the most famous migrationC. mice in northern Europe D. migration of lobstersTask 4You can tell age of a tree by counting its these records of a tree’s life really say a lot more. Scientists are using tree rings to learn what’s been happening on the sun’s surface for the last ten thousand years. Each ring represents a year of growth. As the tree grows, it adds a layer to its trunk, taking up chemical elements from the air. By looking at elements in the rings from a certain year, scientists can what elements were in the air that year. is analyzing one element, carbon14, in rings from both living and dead trees. Some rings go back almost ten thousand years to the end of the Ice Age. When Stevenson followed the carbon14 track back in time, he found carbon14 levels changed with the intensity of solar see, the sun has it burns fiercely, and at other times it’s relatively calm. During the sun’s violent periods, it throws off charged formation of carbon14 on earth. When there is more solar wind activity, less carbon14 is produced. Ten thousand years of tree