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When a Swedish ship that sank in 1628 was recovered from the port of Stockholm, historians and scientists were overjoyed with the chance to examine the remains of the past. The ship construction showed how ships were built and operated during the seventeenth century. In this way, artifacts, objects made by human beings, provided a picture of daily life almost 400 years ago.
Underwater archaeology __the study of ships, aircraft and human settlements that have sunk under large bodies of water is really a product of the last 50 years. The rapid growth of this new area of study has occurred because of the invention of better diving equipment .Besides the Swedish ship wreck(殘骸),underwater archaeologists have made more exciting discoveries such as the  5000-year-old boats in the Mediterranean Sea.
Underwater archaeology can provide facts about the past. In ancient ports all over the world are ships sunken in the past 6,000 years. There are also sunken settlements in seas and lakes telling of people way of life and their systems of trade in ancient times. Underwater archaeologists want to study these objects to add to the world’s knowledge of history, but they have to fight two enemies. One enemy is treasure hunters who dive for ancient artifacts that they can sell to collectors. Once sold, these objects are lost to experts. The second enemy is dredging machines(挖掘機)often used to repair ports. These machines destroy wrecks and artifacts or bury them deeper under sand and mud. By teaching the public about the importance of underwater “museums” of the past, archaeologists are hoping to get support for laws to protect underwater treasures.
【小題1】What purpose does Paragraph 1 serve in the passage?

A.To provide background information of the topic
B.To attract readers’ attention to the topic
C.To use an example to support the topic
D.To offer basic knowledge of the topic
【小題2】The aim of underwater archaeology is to    .
A.exploit water bodies
B.search for underwater life
C.study underwater artifacts
D.examine underwater environment
【小題3】Underwater archaeologists are worried because_____.
A.sea hunters have better diving equipment 
B.their knowledge of world history is limited 
C.dredging machines cause damage to the ports 
D.sold artifacts can hardly be regained for research
【小題4】What is the main purpose of the passage?
A.To introduce a young branch of learning. 
B.To discuss the scientists’ problems. 
C.To explain people’s way of life in the past. 
D.To describe the sunken ships.

【小題1】B
【小題2】C
【小題3】D
【小題4】A

解析【小題1】寫作意圖題:文章開頭舉了瑞士沉船的例子,是想吸引讀者的注意力。這也是此類文章慣用的手法。選B。
【小題2】細節題:文章第二段的:Underwater archaeology __the study of ships, aircraft and human settlements that have sunk under large bodies of water 這是對水底考古學的定義,也得出答案是C。
【小題3】細節題:從文章第三段的:Once sold, these objects are lost to experts.說明這些東西一旦被賣了,專家就再也得不到了,也就不能對它們進行研究了。選D。
【小題4】主旨題:文章第二、三段都重點談的是:Underwater archaeology所以是介紹的一種新的學習分枝。選。A

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