A . 步行或上楼时气短，可有焦虑，呼吸频率轻度增加，闻及散在哮鸣音，肺通气功能和血气检查正常
B . 稍事活动感气短，可有焦虑，呼吸频率增加，可有三凹征，闻及响亮、弥漫的哮鸣音，心率增快，可出现奇脉
C . 休息时感气短，端坐呼吸，只能发单字表达，常有焦虑和烦躁，大汗淋漓，呼吸频率>30次／分，常有三凹征，闻及响亮、弥漫的哮鸣音，心率增快常>120次／分，奇脉，PaO<60mmHg，PaCO>45mmHg，SaO≥90%，pH可降低
D . 不能讲话，嗜睡、意识模糊，胸腹矛盾运动等，喘鸣音减低或消失
E . 长时间内仍有不同频度和不同程度的喘息、咳嗽、胸闷等症状
Read the passage carefully and answer Questions 1 to 5. Answer each question in a maximum of 10 words. Remember to write the answers on the Answer Sheet.
Preserving the Past Today, many old buildings are being torn down so new ones can be built. But some older buildings are both beautiful and interesting. They need to be saved.
The city of San Antonio, Texas, was settled by the Spanish in the early 1700s. Later, it was governed by Mexico. If you go to San Antonio, you can see many missions or churches that were built by the Spanish. All were started between 1720 and 1731. You can also find other buildings from early periods in the history of Texas. Some of these buildings are still standing because a group of women worked to save them.
In 1924, the city of San Antonio was going to cement over the San Antonio River and turn it into an underground sewer. A group of women felt that the beauty of San Antonio should be preserved. They formed a club to keep the river from being destroyed.
The women saved the river. Then they worked together to preserve several old buildings that were going to be torn down. In the 1930s, the women saved an old mill and granary. They raised money to buy these buildings by giving tea parties and selling cakes.
More recently, the ladies in San Antonio have worked to save a Spanish convent. They could not afford to buy the whole building, so they paid for only half. Even so, the women are still looking for other old buildings to save. They want people to know about the city’s long and interesting history.
1．What is the passage mainly about?
2．What does the word “ones” in Sentence 1 refer to?
3．What can you see if you go to San Antonio?
4．The word in Paragraph 3 that means savedis ________.
5．Why have the women worked to save the river and old buildings?
辅助图形的设计类型标志局部设计 和 单元组合设计两种类型。