UNIT 3 单元限时训练(五)(Word版习)-【优化指导】2021-2022学年新教材高中英语选择性必修第四册(人教版2019)

单元限时训练(五) (限时40分钟) Ⅰ.阅读理解 A The world's oceans are some of the most interesting and breathtaking places on the entire planet. A lot of these oceans have witnessed a variety of disappearances and other mysteries, most of which cannot and have not been explained by modern science. Here are some interesting unsolved sea mysteries of the world. USS Scorpion In February 1969, the USS Scorpion, an American submarine, departed from Norfolk, Virginia，on its way towards the Mediterranean. The crew had almost a decade of experience, and yet the sub disappeared and broke into pieces on the seafloor. There were 99 men aboard the sub, all of whom lost their lives. Baltic Sea Sub In the later half of 2014，a mysterious vessel was spotted by Swedish citizens, many of whom described it as a Russian submarine, in the Baltic Sea. The military spent much time in investigating, but found no sign of the mysterious sub. The search was named “the hunt for Reds in October.” Bermeja Island During the 1970s, Bermeja Island served as a bit of a marker for Mexico and its economic zone. Around 20 years later, the island disappeared without any sign. Along with the island, numerous important documents about major oil reserves also went missing. Gulf of Mexico Shipwreck In 2001, Exxon Mobil was laying the pipeline in the Gulf of Mexico when it ran into a shipwreck around 2，600 feet under the surface. Upon exploring the shipwreck, archaeologists believed it to be a terrible spell(咒语), as something would constantly go wrong when they went down to explore. SS Edmund Fitzgerald Lake Superior is so large that it behaves like an inland ocean, including terrific storms. In November 1975, one such storm struck the vessel SS Edmund Fitzgerald, which was headed to Detroit. The Fitzgerald disappeared after communications were lost. A week later, a sonar(声呐)ship found the vessel 500 feet under the water. No body was found, though. 1．Why does the author think of USS Scorpion as a mystery? A．Because 99 men die