关于各种鲸类的首字母填空

发布网友 发布时间：2022-08-12 01:19

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热心网友 时间：2024-03-13 11:39

Whale is the c__1__ name for various marine mammals of the order Cetacea.[ The term whale sometimes refers to all cetaceans, but more o__2__ it excludes dolphins and porpoises, which belong to the suborder Odontoceti (toothed whales). This suborder includes the sperm whale, killer whale, pilot whale, and beluga whale. The other Cetacean suborder, Mysticeti (baleen whales), comprises filter feeders that eat s__3__ organisms caught by straining seawater through a comblike structure found in the mouth called baleen. This suborder includes the blue whale, the humpback whale, the bowhead whale and the minke whale. All cetaceans have forelimbs modified as fins, a tail with horizontal flukes, and nasal openings (blowholes) on top of the head.

Whales range in s__4__ from the blue whale, the largest animal known to have ever existed at 30 m and 180 tonnes (180 long tons; 200 short tons). Whales inhabit all the world's oceans and n__5__ in the millions, with annual population growth rate estimates for various species ranging from 3% to 13%. Whales are long-lived, humpback whales living for u__6__ to 77 years, while bowhead whales may live for over a century.

Human hunting of whales from the 17th century until 1986 radically r__7__ the populations of some whale species. Whales have appeared in literature since the time of the Old Testament, play a role in Inuit creation myths, and are revered by coastal people in Ghana and Vietnam.

1 common 2 often 3 small 4 size 5 number 6 up 7 reced