单项选择题Question 10 is based on the following news. At the end of the news item, you will be given 10 seconds to answer the question. Now listen to the news.
单项选择题The word demented in the last paragraph refers to
单项选择题From the passage we can infer that the relationship between the author and his Grandpa was
单项选择题The main mountain range in the west of US stretching from the Canadian border to New Mexico is
单项选择题A series of dynastic civil wars between supporters of the House of Lancaster and the House of York in the 15th century are also known as