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閱讀理解：
The riches of the sea yet to be developed by man's technology are impressive.Oil and gas explorations have existed for nearly thirty years.Valuable amounts of minerals such as iron,copper and so on exist on the ocean floor.
According to the author,technology is important because ______.
A.resources on land are running short in ten years
B.man can use it to explore the deeper sea
C.it is a lot of fun diving into the sea
D.ancient people used it to explore the sea
正確答案：B
答案解析：本段第一句作者提到The riches of the sea yet to be developed by man's technology are impressive，人類利用技術(shù)可以開發(fā)的海洋資源是驚人的。段末說到：Valuable amounts of minerals such as iron,copper and so on exist on the ocean floor.然而，大量有價(jià)值的礦物均還埋藏于海底。如鐵，銅等等。其他三項(xiàng)都沒有提到。
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