Multiple-choice cloze
For questions 1-8, read the text below and decide which answer (A, B, C or D) best fits each gap.
Many people picture underwater archaeology as glamorous treasure hunting, but the reality is a far from that image. Divers may spend weeks through a single square metre of sediment, recording the position of every fragment before anything is lifted. Visibility is often poor, and bad weather can bring work to a for days at a time. The rewards, , can be considerable. Because objects buried in the seabed are cut off from oxygen, materials such as wood and leather can survive in a good condition that would be impossible on land. A single wreck can light on how sailors lived, what they ate and even how they passed the time on long voyages. Archaeologists are aware, however, that every excavation destroys the site it studies. For this reason, many now argue that wrecks should be left well unless they are under threat from erosion or looting.
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