单项选择题

With the depletion of the cod fishery and so many other coastal fish stocks worldwide, the fishing industry has turned to the high seas to exploit their resources. Fishing operations are now (1) the seamounts, oceanic ridges and plateaus of the deep ocean (2) national jurisdiction, where owner ship and responsibility do not (3) to any nation.
(4) a decade or more, we have caused significant damage to (5) unknown ecosystems, depleted species and probably doomed many others to (6) .Every day, commercial fishing fleets (7) primarily from just 11 nations venture (8) the high seas to fish the deep ocean. What’s left is truly a lonely, infertile, undersea desert.
The high seas are very special. It is here where you can find (9) groupings of animals that (10) their energy from sources (11) the sun around volcanoes on the deep sea floor. It is only here where you can find areas still free from introduced species, (12) in the seas around Antarctica. And it is here where you can find (13) organisms that are more than 8,000 years old, like many of the massive deep-sea corms.
But what really sets the high seas (14) from all other areas we know is the (15) lack of protection for any of this natural heritage.
A United Nations meeting recently finally pay great attention to the high seas and put them on the (16) .Government officials from around the world gathered together with scientists, representatives from the fishing (17) , conservation groups and other stake-holders to discuss conservation and (18) use of marine biological diversity in the high seas, (19) 64 percent of the Earth’s surface.
They need to move quickly. (20) the fragility of these environments, we simply do hot have the luxury of time, but we can act before it is too late.

Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C, and D on ANSWER SHEET 1.1（）

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