2023

Anna thanked the air hostess for what本文是说明文。·淡水贻火有有左，she did for her and asked what was污水的作用，但是由于入类的活动，它们的happening.The air hostess said that she just数量正在锐减。y第had a little disagreement with the gentleman8.A。推断。根据第一段中的reshwaterhe Chinthere and tried her best to hide her hurt.Karlmussels can be easy to misswithout完整was shocked to see Anna and he hesitantlynoticing可知，淡水贻贝经常被入们忽asked why she was in economy class.Anna视。9.D。理解具体信息。根据第三段中的Hisexplained that it saved her money to give tocharity and other worthwhile causes.AnnaBut the most terrible disaster for themmulthad heard Karl's voice all the way from heroccurred when humans began to constructKsection and she realized what had happened.dams可知，大规模兴建河坝让美国淡水finally贻贝陷入濒危状态。deal,aSo she criticized Karl for making the airwas sehostess's job more difficult than it had to be.10.D。理解文章结构。根据第四段中的王9an adult mussel is a powerful andbusinessAnna thought Karl should apologize tothis young lady.She explained that whileefficient water filter和第五段中的AHisshestudy tound that the relatively heaithy