冰期（ice age）
冰期（ice age）
相关考题：
Climate will warm up over the next 50 to 100 years () it has warmed in the 20,000 years since Ice Age. A、as long asB、as soon asC、as well asD、as much as
When the glaciers（ ）after the last ice age,the five Great Lakes of North America were formed.A.advancedB.evaporatedC.thawedD.exploded
单选题ATo examine the chemical elements in the Ice Age.BTo look into the pattern of solar wind activity.CTo analyze the composition of different trees.DTo find out the origin of carbon-14 on Earth.
单选题According to the passage, which of the following is true of the ratios of oxygen isotopes in ocean sediments?AThey indicate that sediments found during an ice age contain more calcium carbonate than sediments formed at other times.BThey are less reliable than the evidence from rocks on land in determining the volume of land ice.CThey can be used to deduce the relative volume of land ice that was present when the sediment was laid down.DThey are more unpredictable during an ice age than in other climatic conditions.EThey can be used to determine atmospheric conditions at various times in the past.
单选题The scientists are not sure_______.Ahow long the ice age lastedBwhere ice sheets melted during the ice ageCwhat caused the temperature changesDwhat the earth is made up of
单选题You are on an ice-reinforced vessel about to enter packice. You should（）.Aenter the pack on the windward side where there is a well defined ice edgeBtrim to an even keel or slightly down by the bow to take maximum benefit of the ice reinforcementCtake maximum advantage of coastal leads caused by offshore windsDlook for areas of rotten ice and enter perpendicular to the ice edge
单选题AIt affects the growth of trees.BIt has been increasing since the Ice Age.CIt is determined by the chemicals in the air.DIt follows a certain cycle.
单选题Between 65,000 and 35,000 years ago,______.Athe temperature changed a lotBthe earth was much warmer than it is nowCwinter isn't colder than summerDmost of the ice that melted was in the Northern hemisphere during the 30,000-year long ice age
问答题Scientists have long assumed that most of the ice that melted was in the Northern hemisphere（半球） during the 30,000-year long ice age.
单选题Which of the following is the best title for the passage ?AA computer modelBStudies show ice melted equally in the North and the South during the ice ageCMost of the ice melted in the Northern hemisphere during the 30,000-year long ice ageDA survey result
问答题请解释冰期时期和间冰期