- 相關推薦
2007年職稱英語考試理工類(A級)試題及答案(5)
第二篇A Very Slow Ride
The surface of the earth may seem very stable to you.But you might be amazed if you knew some of the things that are going on under that surface.
The earth has an outer shell of rigid pieces called tectonic plates (地殼構造板塊).The plates include both ocean floor and dry land.Some have whole continents on top of them.The continents on top of the plates are just going along for a slow ride,moving only about four inches per year.But even this small movement causes three types of big interactions.
One type is ocean ridges.These ridges develop in places where two plates are moving away from each other.As the plates separate,hot magma(巖漿)flows up to fill the space.New crust(地殼)builds up on the plate boundaries and causes ocean ridges.These ridges form long mountain ranges,which only rise above the ocean surface in a few places.
Another type of reaction-trenches-occurs between two plates that are moving toward each other.As the plates meet,one bends downward and plunges undemeath the other.This forms deep ocean trenches.The Marianas Trench off Guam in the western Pacific Ocean has a depth of more than 36,000 feet.This is the lowest point on the ocean floor.If the leading edges of the two colliding plates carry continents,then the layers of rock in the overriding plate crumple(變皺)and fold.A plate that carried what is now lndia collided with the southern edge of the plate that carried Europe and most of Asia.This caused the Himalayas,the world’s highest mountains.
The third reaction is transform faults(轉換斷層).These faults occur where two plates that are traveling in opposite directions slide past each other.Severe earthquakes can occur.The San Andreas Fault in Califomia is a good example of this type of movement.
36.The word“stable”(paragraph 1)means
A.“a place for horses”.
B.“calm and easygoing”.
C.“steady or firm”.
D.“a collection of animals”.
37.To explain the effect of trenches,the writer gives the example of
A.the sea floor in the Atlantic Ocean.
B.the Himalayan Mountains.
C.Europe.
D.lndia.
38.The San Andreas Fault is an example of
A.a severe earthquake.
B.a California rock formation.
C.two plates moving apart.
D.two plates aliding past each other.
39.According to the passage,the earth is
A.always changing.
B.becoming smaller.
C.moving faster.
D.getting hotter.
40.This passage is mostly about
A.effects of movements of the earth’s plates.
B.different types of continents.
C.the Marianas Trench.
D.transform faults.
【職稱英語考試理工類(A級)試題及答案(5)】相關文章：
職稱英語理工類B真題及答案10-25
國學試題及答案02-23
小升初語文測試試題及答案10-17
公司文員筆試題目及答案04-24
大學計算機一級考試試題及答案12-01
三級安全教育考試試題及答案版04-29
最新自考英語二真試題及答案10-24
考研英語一試題及答案(2)10-18
和老媽過招閱讀答案 語文試題01-10
初中英語練習試題及答案12-21