藏在一个大山洞中。此处是sth. be found done结构。

　　9．This will be extremely important work, and its success or failure will depend on ________ we can find a lot of capable young people now.

　　A．what B．if

　　C．why D．whether

　　解析：选D。考查宾语从句。句意：这是一个非常重要的工作，成功与否就看现在我们能不能发现一批能干的年轻人了。由句意可排除A、C两项。在介词后要用whether引导从句，不能使用if。

　　10．________ eating some sugar is necessary, eating too much can be harmful to one's health.

　　A．Whether B．Since

　　C．While D．If

　　解析：选C。句意：尽管摄取一些糖分是必要的，可吃太多了会对人的健康有害。whether"是否"；since"既然"；while"尽管"；if"如果"。根据句意，选择C项。

　　Ⅳ.阅读理解

　　There is little doubt that humans used herbs (药草) for healing well before anything could be written about them.

　　Many authorities recognize Hippocrates as the "father of medicine" for the European tradition. The treatment of the Hippocratic physician reflected his fundamental approach. It was the treatment of an individual, not a disease, and the treatment of the whole body, not any part of it. Treatment was based on the fundamental idea that nature had a strong healing force of its own, and that the main role of the physician was to assist nature in this healing process, rather than to direct it. The main ally of the physician in assisting nature in this process was diet. Only if diet failed were drugs used, and surgery was a last resort.

　　The great philosopher Aristotle was the son of a medical man and a medical man himself, but his main influence on the development of European medicine was through his student, Theophrastus, called the "father of botany (植物学)". He was the first known author in Europe of a classification system for plants with accompanying comments about their medicinal value. He described about 450 different medicinal plants. However, this text has not come down through history, and is only noted in later commentaries.

The first document of herbal medicine that is regarded as a medical classic in the European tradition was De Materia Medica by Dioscorides. Dioscorides was a surgeon accompanying the army. He traveled far, collected much information, and gained considerable medical experience. Dioscorides had recorded herb knowledge for 600 plants. The book's pictures were