Q109. PTE Reorder Paragraph

The text boxes below have been placed in a random order. Reorder the paragraphs.

A. The topography of the ocean floors is none too well known, since in great areas the available soundings are hundreds or even thousands of miles apart.

B. However, the floor at the Atlantic is becoming fairly well known as a result of special surveys since 1920.

C. A broad, well-defined ridge-the Mid—Atlantic ridge— runs north and south between Africa and the two Americas.

D. Numerous other major irregularities diversify the Atlantic floor.

E. Closely spaced soundings show that many parts of the oceanic floors are as rugged as mountainous regions of the continents.

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