首页
登录
职称英语
Icebergs are among nature’s most spectacular creations, and yet most people
Icebergs are among nature’s most spectacular creations, and yet most people
游客
2024-06-11
23
管理
问题
Icebergs are among nature’s most spectacular creations, and yet most people have never seen one. A vague air of mystery envelops them. They come into being—somewhere—in faraway, frigid waters, amid thunderous noise and splashing turbulence, which in most cases no one hears or sees. They exist only a short time and then slowly waste away just as unnoticed.
Objects of sheerest beauty, they have been called. Appearing in an endless variety of shapes, they may be dazzlingly white, or they may be glassy blue, green or purple, tinted faintly or in darker hues. They are graceful, stately, inspiring in calm, sunlit seas.
But they are also called frightening and dangerous, and that they are—in the night, in the fog, and in storms. Even in clear weather one is wise to stay a safe distance away from them. Most of their bulk is hidden below the water, so their underwater parts may extend out far beyond the visible top. Also, they may roll over unexpectedly, churning the waters around them.
Icebergs are parts of glaciers that break off, drift into the water, float about awhile, and finally melt. Icebergs afloat today are made of snowflakes that have fallen over long ages (ff time. They embody snows that drifted down hundreds, or many thousands, or in some cases maybe a million years ago. The snows fell in polar regions and on cold mountains, where they melted only a little or not at all, and so collected to great depths over the years and centuries.
As each year’s snow accumulation lay on the surface, evaporation and melting caused the snow flakes slowly to lose their feathery points and become tiny grains of ice. When new snow fell on top of the old, it turned to icy grains. So blankets of snow and ice grains mounted layer upon layer and were of such great thickness that the weight of the upper layers compressed the lower ones. With time and pressure from above, the many small ice grains joined and changed to larger crystals, and eventually the deeper crystals merged into a solid mass of ice. [br] The icebergs are dangerous because they are hidden __ and can turn over unexpectedly.
选项
答案
underwater/below the water
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3629861.html
相关试题推荐
Spaceenthusiastslooktothedaywhenordinarypeople,aswellprofessional
Somepeoplearguethatmostcrime______(可归咎于对金钱的贪婪).canbeattributedtotheg
[originaltext]Ourenvironmentisbeingpollutedfasterthannatureandman’
[originaltext]Ourenvironmentisbeingpollutedfasterthannatureandman’
AreAmericansbeautifulpeoplewithperfectteethandbodiessculptedbypla
Globalizationofsportingculturemeansthat______.[br]Peoplewanttoseehig
[originaltext]Theyoungpeoplewhotalkofthevillageasbeing"dead"are
[originaltext]Theyoungpeoplewhotalkofthevillageasbeing"dead"are
FewpeopleknowthatMr.PotatoHeadwasalmostlittlemorethanaforgotten
Peopleusetheword"unidentified"todescribethereportedflyingobjectsbecau
随机试题
[originaltext] ItwasabadnightforLewis.Hisresearchintheneighboringt
TheWorldBankfiguresshowsharppriceincreasesinwheat,maize,sugar,an
()售后服务部()广告策划部[br]()生产部()技术质量部N,H
人工流产吸宫术和钳刮术的禁忌证是:()A.各种急性传染病或严重的全身
注册会计师应当考虑其对保持客户关系可能造成的影响的情况有( )。A、之前业务执行
患者,男,45岁。咳嗽、咳痰5年,近3年每年持续咳嗽、咳痰3~4个月。肺部X线检
患者,女性,48岁,8月初由外地来京探亲,因“发热、头痛5天,神志不清2天”于9
患者,女,30岁。因尿路感染后需做尿培养。患者神志清醒,一般情况良好。护士留取尿
为使前任注册会计师愿意向其提供更多的接触工作底稿的机会,后任注册会计师可以考虑同
女,25岁,午后发热3周,咳嗽,少量白色黏痰,体检:左肩胛区闻及少量湿啰音,血沉
最新回复
(
0
)