TOEFL全真試題3-2

時間：2024-10-19 12:20:24 維澤托福英語

TOEFL全真試題（3-2）

　　在學習、工作生活中，我們都要用到試題，試題是命題者根據(jù)一定的考核需要編寫出來的。你所見過的試題是什么樣的呢？下面是小編為大家收集的TOEFL全真試題（3-2），供大家參考借鑒，希望可以幫助到有需要的朋友。

TOEFL全真試題（3-2）

　　TOEFL全真試題3-2 1

　　1.The Chisos Mountains in Big Bend National Park in Texas were created by volcanic eruptions that occurred _____。

　　(A)the area in which dinosaurs roamed

　　(B)when dinosaurs roamed the area

　　(C)did dinosaurs roam the area

　　(D)dinosaurs roaming the area。

　　2.In bas-relief sculpture，a design projects very slightly from its background，_____ some coins。

　　(A)as on

　　(B)because

　　(C)the way that

　　(D)similarly。

　　3.Alaska found the first years of its statehood costly because it had to take over the expense of services _____ previously by the federal government。

　　(A)To provide

　　(B)Be provided

　　(C)providing

　　(D)provided。

　　4.With age，the mineral content of human bones decreases，_____ them more fragile。

　　(A)make

　　(B)and to make

　　(C)thereby making

　　(D)which it makes。

　　5.。Not until Kentucky‘s Mammoth Cave had been completely explored in 1972_____。

　　(A)when was its full extent realized(B)that its full extent realized

　　(C)was its full extent realized

　　(D)the realization of its full extent。

　　6.The first explorer _____ California by land was Jedediah Strong Smith，a trapper who crossed the southwestern deserts of the United States in 1826。

　　(A)that he reached(B)reached

　　(C)to reach

　　(D)reaching it

　　TOEFL全真試題3-2 2

　　if the salinity of ocean waters is analyzed， it is found to vary only slightly from place to place. nevertheless， some of these small changes are important. there are three basic processes that cause a change in oceanic salinity. one of these is the subtraction of water from the ocean by means of evaporation conversion of liquid water to water vapor. in this manner， the salinity is increased， since the salts stay behind. if this is carried to the extreme， of course， white crystals of salt would be left behind.

　　the opposite of evaporation is precipitation， such as rain， by which water is added to the ocean. here the ocean is being diluted so that the salinity is decreased. this may occur in areas of high rainfall or in coastal regions where rivers flow into the ocean. thus salinity may be increased by the subtraction of water by evaporation， or decreased by the addition of fresh water by precipitation or runoff.

　　normally， in tropical regions where the sun is very strong， the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation. similarly， in coastal regions where rivers dilute the sea， salinity is somewhat lower than in other oceanic areas.

　　a third process by which salinity may be altered is associated with the formation and melting of sea ice. when seawater is frozen， the dissolved materials are left behind. in this manner， seawater directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared. of course， when this ice melts， it will tend to decrease the salinity of the surrounding water.

　　in the weddell sea， off antarctica， the densest water in the oceans is formed as a result of this freezing process， which increases the salinity of cold water. this heavy water sinks and is found in the deeper portions of the oceans of the world.

　　1. What does the passage mainly discuss？

　　A.the elements of salt

　　B.the bodies of water of the world

　　C.the many forms of ocean life

　　D.the salinity of ocean water

　　2. The word this in line 5 refers to

　　A.ocean

　　B.evaporation

　　C.salinity

　　D.crystals

　　3. According to the passage， the ocean generally has more salt in

　　A.coastal areas