首页
登录
职称英语
What is the main idea of this passage? [br] [originaltext] About one million
What is the main idea of this passage? [br] [originaltext] About one million
游客
2023-11-07
32
管理
问题
What is the main idea of this passage? [br]
About one million years ago, the Ice Age began. The Ice Age was a long period of time in which four great glaciers pushed southward to cover almost all the upper half of North America, and then melted away. Each glacier was a thick sheet of ice and snow that spread out from a centre near what is now Hudson Bay in Canada. The winters were long, and the cool summers were too short to melt much of the ice and snow. The ever-growing sheet built up to a thickness of two miles at its centre. As all glaciers do, these great glaciers slid. They pushed down giant trees in their paths and scraped the earth bare of soil. Many animals moved farther south to escape. Others stayed and were destroyed. When winters of little snow came, the summer suns cut into the edges of the ice sheets. As the glaciers melted, rocks, soil and other things that had mixed with the ice and snow were left. New hills, lakes and rivers were formed. The last of the great glaciers began its melting about 11,000 years ago. Its melting formed the Great Lakes. These lakes are today a little changed from their early sizes and shapes. The largest of the North American river systems was also influenced by the glaciers. This is the Mississippi-Missouri-Ohio system. These rivers were miles wide at first. Through the years they settled into their present channels.
选项
A、Great glaciers are very destructive.
B、All glaciers move southward.
C、The Mississippi-Missouri-Ohio system is larger than it was before the Ice Age.
D、The Great Lakes are now smaller than they were before the Ice Age.
答案
A
解析
细节题。文中说到当那些巨大的冰川滑动过程中会推倒挡住前进道路的大树,并带走地面上的泥土,故A项是正确的。
转载请注明原文地址:https://tihaiku.com/zcyy/3166690.html
相关试题推荐
Thoseconvictedofracismwillbe[originaltext]Finally,theauthoritiesin
Australia’snewPrimeMinisterKevinRuddhasopposed[originaltext]Australi
Whatisthepassagemainlyabout?[br][originaltext]Settlersoriginallyca
Whowerethefirstinsurancecontractsdesignedtoprotect?[br][originaltext]
Whowerethefirstinsurancecontractsdesignedtoprotect?[originaltext]It
What’stheconversationmainlyabout?[br][originaltext]W:Hi,Bill.Youweren
Whatdidthewomanthinkatfirst?[br][originaltext]W:Ihadareallystrange
Whatdidthewomanthinkatfirst?[originaltext]W:Ihadareallystrangeexper
Themerchantspacecraftismeantto[br][originaltext]It’s60feetlong,m
Themerchantspacecraftismeantto[originaltext]It’s60feetlong,madeof
随机试题
Oneofthegoodthingsformeninwomen’sliberationisthatmennolongerh
档案室应认真执行有关文件材料归档范围的规定,从组织上和制度上保证档案的完整齐全。
混业经营体制的表现形式有()。A.职能银行 B.单一银行 C.全能银行 D
下列哪种药对洋地黄中毒引起的快速型心律失常疗效最佳()A:苯妥英钠 B:阿托
成孔成槽质量检测时泥浆指标应符合的技术性能要求是()A.ρ≤1.20g/cm3
导致气消的情绪变化是( )。A.怒 B.喜 C.思 D.悲 E.恐
简述现代企业人力资源管理各个历史发展阶段的特点。
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
图示正弦稳态电路发生谐振时,安培表A1的读数为12A,安培表A2的读数为20A,
毛果芸香碱引起瞳孔缩小的机制是A.激动瞳孔括约肌的M受体 B.阻断瞳孔括约肌的
最新回复
(
0
)