【答案】is【核心短语/词汇】all year round:全年【翻译】北冰洋大约30%的部分全年被冰覆盖,一半的部分是夏天。【解析】根据句意可知,本句是在陈述客观事实,所以时态为一般现在时。前半句的主语为About 30 percent of the Arctic Ocean,意为“北冰洋大约30%的部分”,百分数+of+名词作主语时,谓语动词的单复数由...
考查主谓一致。由and后的“for half a year the sun does not rise above the horizon (地平线).”可知本句用一般现在时,排除C/D选项;分数/百分数+of+名词作主语时,谓语动词和of后⾯的名词保持一致。本句主语是“30 percent of the Arctic Ocean”,of 后面是可数名词单数,因此be动词用is。故选B。反馈...
6. Ocean facts worksheets for kids科普练习纸,共9页。 Animals Fact Sheets 海洋动物科普,共8种动物。 Orca Whale虎鲸 ,材料中有动物的所属类别、饮食、栖息地、寿命、产子情况、有趣的科普,孩子能学习到各种海洋动物的知识。 7. Ocean Addition C...
About 30 percent of the Arctic Ocean(北冰洋) ___ covered by ice all year round and for half a year the sun does not rise above the horizon(地平线).( ) A.are B.is C.were D.was 【考点】语法一致;一般现在时的被动语态. 【答案】B 【解答】 【点评】 声明:本试题解析著作权属菁优网所...
The Ocean Prediction Center has 5 operational desks that run in 10 hour shifts: the Atlantic Regional, Atlantic High Seas, Pacific Regional, Pacific High Seas, and the Outlook. Operations are 365 days a year and 24x7, including night shifts, holidays, and weekends. A quick overview of each...
A huge area of sea ice that covers most of the Arctic Ocean all year round (usually), the sea ice gets thicker and spreads further each winter, but this hasn't happened in the past few years.The Arctic sea ice is important because sea ice reflects heat and light from the sun back in...
百度试题 结果1 题目4 About 30 percent of the Arctic Ocean()covered by ice all year round and hall 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
( 1999 ), Oceanography: All change in the Arctic , Nature , 397 ( 6718 ), 389 – 391 , doi: 10.1038/17018 .Dickson, B. , All changes in the Arctic , Nature , 397 , 389 – 391 , 1999 .Dickson RR (1999) All change in the Arctic. Nature 397:389–391...
the ocean.He found that the deeper the water, the colder it got, and he concluded that the seafloor was covered with a thick layer of ice.Peron ignored the fact that water expands when it freezes and that ice therefore floats.A more popular belief at the time was that water at great ...
oceans are really big. Scientists estimate that there are about 330 million cubic miles of water in the oceans. There are four main oceans---the Atlantic, the Indian, the Arctic, and the Pacific. The largest and deepest is the Pacific Ocean. In fact, the Pacif 正在翻译,请等待...[transl...