①There are many unexplained mysteries of the natural world, of which the Bermuda Triangle is a particular one.

　　②There are many unexplained mysteries of the natural world, and the Bermuda Triangle is a particular one.

　　2．自1945年以来，至少数百艘轮船和飞机以及数千人在此消失，没有留下残骸和尸体。

　　①Since 1945, at least hundreds of ships and planes and over a thousand people have disappeared here，leaving no wreckage or bodies.

　　②Since 1945, at least hundreds of ships and planes and over a thousand people have disappeared here，which hasn't left no wreckage or bodies.

　　第三步：连句成篇

　　There are many unexplained mysteries of the natural world, of which the Bermuda Triangle is a particular one. This is an area of the western Atlantic between Bermuda and Florida，roughly triangular in shape，where some strange things happened. Since 1945, at least hundreds of ships and planes and over a thousand people have disappeared, leaving no wreckage or bodies.

　　Some reasons have been given to explain the disturbing incidents that occurred in the area of Bermuda Triangle. Some people think aliens might have arrived at this area and taken those ships, planes and people away. Some believe they might be caused by special weather there. But no one can give a believable reason. Maybe in the future we can find the answer with the development of science and technology.

　　　　　　　　　　　　　　　　　　　　　[对应学生课下能力提升(二十四)]

　　Ⅰ.阅读理解

　　Children in the United States eat too much pizza that some researchers now argue the food should join the ranks of sugary drinks and fast food for the harm they do to health.

　　In a new study, the researchers found that pizza is a large source of calories, saturated fat (饱和脂肪) and salt in children's diets.Children should not eat more than two slices of pizza for a meal, and should pair that with salad, rather than with another high­calorie food, the researchers concluded.

　　"Parents should aim to control pizza consumption (消费), particularly as a snack where it was shown to have a very adverse impact on children, and they should put their pizza dollars toward healthier brands."Said Lisa Powel, director of the Illinois Prevention Research Center.

　　 Pizza has become a matter of focus in recent years for researchers who look at the meals children eat, rather than the nutrients within them.Studies have found pizza is among the greatest sources of calories for children.

　　 "Since pizza remains a common part of children's diet, we need to make 'healthy' pizza." Powel said.To make pizza healthier, food producers should reduce its saturated fat and salt, and increase its whole grain content，" she said.

　　 Whether or not pizza is harmful enough to be picked out as an unhealthy food, the study attracts attention to a larger issue with the modern American lifestyle, said Alexis Tindall, who was not involved in the flow research.

"Many foods are eaten too frequently and in large sizes，" said Tindall.To solve the problem, people don't have to give up eating pizza, but instead, they can eat smaller and healthier