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1、QQ1372661595独家制作TOEFL IBT全真界面模拟考题Toefl iBT Practice Test TPO 22 Reading Section 1No. of Questions: 14Time: 20 minutesBegin Test更多TPO托福相关资料请联系QQ1372661595 QQ1372661595独家制作TOEFL IBT全真界面模拟考题更多TPO托福相关资料请联系QQ1372661595 请务必确认这份试题是由 1372661595 发送给您的。若是来自其他

2、渠道， 会出现以下问题（也许不是当时就出现问题，但很可能几天以后就出现），本人不负责解决。问题1：听不到声音，或者是杂音 问题2：阅读黑屏，或文章无法拖动问题3：无法勾选和保存答案，且答案错误问题4：无法算分（没有算分器）还有其他问题不一一列举。购买地址： 非本店购买，一经查实，一律永久封IP，听力口语所有音频将无法播放且永久无声音若这份试题是来自QQ 1372661595 ，请放心使用。If this test comes from QQ1372661595 you can do it !更多TPO托福

3、相关资料请联系QQ1372661595 22If you cannot see the timer or if you cannot set the timer, youll need to install flash player. Click here to download and install adobe flash player.Set the timer to 20 minutes beforedoing this test.SpartinaSpartina alterniflora,known as cordgrass,is a de

4、ciduous,perennial flowering plant native to the Atlantic coast and the Gulf Coast of the United States.It is the dominant native species of the lower salt marshes along these coasts,where it grows in the intertidal zone(the area covered by water some parts of the day and exposed others).These natura

5、l salt marshes are among the most productive habitats in the marine environment.Nutrient-rich water is brought to the wetlands during each high tide,making a high rate of food production possible.As the seaweed and marsh grass leaves die,bacteria break down the plant meterial,and insects,small shrim

6、plike organisms,fiddler crabs,and marsh snails eat the decaying plant tissue,digest it,and excrete wastes high in nutrients.Numerous insects occupy the marsh,feeding on living or dead cordgrass tissue,and redwing blackbirds,sparrows,rodents,rabbits,and deer feed directly on the cordgrass.Each tidal

7、cycle carries plant meterial into the offshore water to be uesd by the subtidal organisms.Spartina is an exceedingly competitive plant.It spreads primarily by underground stems;colonies form when pieces of the root system or whole plants float into an area and take root or when seeds float into a su

8、itable area and germinate.Spartina establishes itself on substrates ranging from sand and silt to gravel and cobble and is tolerant of salinities ranging from that of near freshwater (0.05 percent)to that of salt water(3.5 percent).Because they lack oxygen,marsh sediments are high in sulfides that a

9、re toxic to most plants.Spartina has the ability to take up sulfides and convert them to sulfate,a form of sulfur that the plant can use;this ability makes it easier for the grass to colonize marsh environments.Another adaptive advantage is Spartinas ability to use carbon dioxide more efficiently th

10、an most other plants.These characteristics make Spartina a valuable comonent of the estuaries where it occurs naturally.The plant functions as a stabilizer and a sediment trap and as a nursery area for estuarine fish and更多TPO托福相关资料请联系QQ1372661595 22Question 1 of 14Paragraph 1 i

11、s marked with Spartina Spartina alterniflora,known as cordgrass,is a deciduous,perennial flowering plant native to the Atlantic coast and the Gulf Coast of the United States.It is the dominant native species of the lower salt marshes along these coasts,where it grows in the intertidal zone(the area

12、covered by water some parts of the day and exposed others).These natural salt marshes are among the most productive habitats in the marine environment.Nutrient-rich water is brought to the wetlands during each high tide,making a high rate of food production possible.As the seaweed and marsh grass le

13、aves die,bacteria break down the plant meterial,and insects,small shrimplike organisms,fiddler crabs,and marsh snails eat the decaying plant tissue,digest it,and excrete wastes high in nutrients.Numerous insects occupy the marsh,feeding on living or dead cordgrass tissue,and redwing blackbirds,sparr

14、ows,rodents,rabbits,and deer feed directly on the cordgrass.Each tidal cycle carries plant meterial into the offshore water to be uesd by the subtidal organisms.Spartina is an exceedingly competitive plant.It spreads primarily by underground stems;colonies form when pieces of the root system or whol

15、e plants float into an area and take root or when seeds float into a suitable area and germinate.Spartina establishes itself on substrates ranging from sand and silt to gravel and cobble and is tolerant of salinities ranging from that of near freshwater (0.05 percent)to that of salt water(3.5 percen

16、t).Because they lack oxygen,marsh sediments are high in sulfides that are toxic to most plants.Spartina has the ability to take up sulfides and convert them to sulfate,a form of sulfur that the plant can use;this ability makes it easier for the grass to colonize marsh environments.Another adaptive a

17、dvantage is Spartinas ability to use carbon dioxide more efficiently than most other plants.These characteristics make Spartina a valuable comonent of the estuaries where it occurs naturally.The plant functions as a stabilizer and a sediment trap and as a nursery area for estuarine fish and更多TPO托福相关

18、资料请联系QQ1372661595 22Question 2 of 14Paragraph 2 is marked with SpartinaSpartina alterniflora,known as cordgrass,is a deciduous,perennial flowering plant native to the Atlantic coast and the Gulf Coast of the United States.It is the dominant native species of the lower salt mars

19、hes along these coasts,where it grows in the intertidal zone(the area covered by water some parts of the day and exposed others). These natural salt marshes are among the most productive habitats in the marine environment.Nutrient-rich water is brought to the wetlands during each high tide,making a

20、high rate of food production possible.As the seaweed and marsh grass leaves die,bacteria break down the plant meterial,and insects,small shrimplike organisms,fiddler crabs,and marsh snails eat the decaying plant tissue,digest it,and excrete wastes high in nutrients.Numerous insects occupy the marsh,

21、feeding on living or dead cordgrass tissue,and redwing blackbirds,sparrows,rodents,rabbits,and deer feed directly on the cordgrass.Each tidal cycle carries plant meterial into the offshore water to be uesd by the subtidal organisms.Spartina is an exceedingly competitive plant.It spreads primarily by

22、 underground stems;colonies form when pieces of the root system or whole plants float into an area and take root or when seeds float into a suitable area and germinate.Spartina establishes itself on substrates ranging from sand and silt to gravel and cobble and is tolerant of salinities ranging from

23、 that of near freshwater (0.05 percent)to that of salt water(3.5 percent).Because they lack oxygen,marsh sediments are high in sulfides that are toxic to most plants.Spartina has the ability to take up sulfides and convert them to sulfate,a form of sulfur that the plant can use;this ability makes it

24、 easier for the grass to colonize marsh environments.Another adaptive advantage is Spartinas ability to use carbon dioxide more efficiently than most other plants.These characteristics make Spartina a valuable comonent of the estuaries where it occurs naturally.The plant functions as a stabilizer an

25、d a sediment trap and as a nursery area for estuarine fish and更多TPO托福相关资料请联系QQ1372661595 22Question 3 of 14Paragraph 2 is marked with SpartinaSpartina alterniflora,known as cordgrass,is a deciduous,perennial flowering plant native to the Atlantic coast and the Gulf Coast of the

26、 United States.It is the dominant native species of the lower salt marshes along these coasts,where it grows in the intertidal zone(the area covered by water some parts of the day and exposed others). These natural salt marshes are among the most productive habitats in the marine environment.Nutrien

27、t-rich water is brought to the wetlands during each high tide,making a high rate of food production possible.As the seaweed and marsh grass leaves die,bacteria break down the plant meterial,and insects,small shrimplike organisms,fiddler crabs,and marsh snails eat the decaying plant tissue,digest it,

28、and excrete wastes high in nutrients. 【 Numerous insects occupy the marsh,feeding on living or dead cordgrass tissue,and redwing blackbirds,sparrows,rodents,rabbits,and deer feed directly on the cordgrass. 】 Each tidal cycle carries plant meterial into the offshore water to be uesd by the subtidal o

29、rganisms.Spartina is an exceedingly competitive plant.It spreads primarily by underground stems;colonies form when pieces of the root system or whole plants float into an area and take root or when seeds float into a suitable area and germinate.Spartina establishes itself on substrates ranging from

30、sand and silt to gravel and cobble and is tolerant of salinities ranging from that of near freshwater (0.05 percent)to that of salt water(3.5 percent).Because they lack oxygen,marsh sediments are high in sulfides that are toxic to most plants.Spartina has the ability to take up sulfides and convert

31、them to sulfate,a form of sulfur that the plant can use;this ability makes it easier for the grass to colonize marsh environments.Another adaptive advantage is Spartinas ability to use carbon dioxide more efficiently than most other plants.These characteristics make Spartina a valuable comonent of t

32、he estuaries where it occurs naturally.The plant functions as a stabilizer and a sediment trap and as a nursery area for estuarine fish and更多TPO托福相关资料请联系QQ1372661595 22Question 4 of 14Paragraph 3 is marked with SpartinaSpartina alterniflora,known as cordgrass,is a deciduous,per

33、ennial flowering plant native to the Atlantic coast and the Gulf Coast of the United States.It is the dominant native species of the lower salt marshes along these coasts,where it grows in the intertidal zone(the area covered by water some parts of the day and exposed others).These natural salt mars

34、hes are among the most productive habitats in the marine environment.Nutrient-rich water is brought to the wetlands during each high tide,making a high rate of food production possible.As the seaweed and marsh grass leaves die,bacteria break down the plant meterial,and insects,small shrimplike organ

35、isms,fiddler crabs,and marsh snails eat the decaying plant tissue,digest it,and excrete wastes high in nutrients.Numerous insects occupy the marsh,feeding on living or dead cordgrass tissue,and redwing blackbirds,sparrows,rodents,rabbits,and deer feed directly on the cordgrass.Each tidal cycle carri

36、es plant meterial into the offshore water to be uesd by the subtidal organisms. Spartina is an exceedingly competitive plant.It spreads primarily by underground stems;colonies form when pieces of the root system or whole plants float into an area and take root or when seeds float into a suitable are

37、a and germinate.Spartina establishes itself on substrates ranging from sand and silt to gravel and cobble and is tolerant of salinities ranging from that of near freshwater (0.05 percent)to that of salt water(3.5 percent).Because they lack oxygen,marsh sediments are high in sulfides that are toxic t

38、o most plants.Spartina has the ability to take up sulfides and convert them to sulfate,a form of sulfur that the plant can use;this ability makes it easier for the grass to colonize marsh environments.Another adaptive advantage is Spartinas ability to use carbon dioxide more efficiently than most ot

39、her plants.These characteristics make Spartina a valuable comonent of the estuaries where it occurs naturally.The plant functions as a stabilizer and a sediment trap and as a nursery area for estuarine fish and更多TPO托福相关资料请联系QQ1372661595 22Question 5 of 14Paragraph 3 is marked w

40、ith SpartinaSpartina alterniflora,known as cordgrass,is a deciduous,perennial flowering plant native to the Atlantic coast and the Gulf Coast of the United States.It is the dominant native species of the lower salt marshes along these coasts,where it grows in the intertidal zone(the area covered by

41、water some parts of the day and exposed others).These natural salt marshes are among the most productive habitats in the marine environment.Nutrient-rich water is brought to the wetlands during each high tide,making a high rate of food production possible.As the seaweed and marsh grass leaves die,ba

42、cteria break down the plant meterial,and insects,small shrimplike organisms,fiddler crabs,and marsh snails eat the decaying plant tissue,digest it,and excrete wastes high in nutrients.Numerous insects occupy the marsh,feeding on living or dead cordgrass tissue,and redwing blackbirds,sparrows,rodents

43、,rabbits,and deer feed directly on the cordgrass.Each tidal cycle carries plant meterial into the offshore water to be uesd by the subtidal organisms. Spartina is an 【 exceedingly 】 competitive plant.It spreads primarily by underground stems;colonies form when pieces of the root system or whole plan

44、ts float into an area and take root or when seeds float into a suitable area and germinate.Spartina establishes itself on substrates ranging from sand and silt to gravel and cobble and is tolerant of salinities ranging from that of near freshwater (0.05 percent)to that of salt water(3.5 percent).Bec

45、ause they lack oxygen,marsh sediments are high in sulfides that are toxic to most plants.Spartina has the ability to take up sulfides and convert them to sulfate,a form of sulfur that the plant can use;this ability makes it easier for the grass to colonize marsh environments.Another adaptive advanta

46、ge is Spartinas ability to use carbon dioxide more efficiently than most other plants.These characteristics make Spartina a valuable comonent of the estuaries where it occurs naturally.The plant functions as a stabilizer and a sediment trap and as a nursery area for estuarine fish and更多TPO托福相关资料请联系Q

47、Q1372661595 22Question 6 of 13Paragraph 3 is marked with SpartinaSpartina alterniflora,known as cordgrass,is a deciduous,perennial flowering plant native to the Atlantic coast and the Gulf Coast of the United States.It is the dominant native species of the lower salt marshes al

48、ong these coasts,where it grows in the intertidal zone(the area covered by water some parts of the day and exposed others).These natural salt marshes are among the most productive habitats in the marine environment.Nutrient-rich water is brought to the wetlands during each high tide,making a high ra

49、te of food production possible.As the seaweed and marsh grass leaves die,bacteria break down the plant meterial,and insects,small shrimplike organisms,fiddler crabs,and marsh snails eat the decaying plant tissue,digest it,and excrete wastes high in nutrients.Numerous insects occupy the marsh,feeding

50、 on living or dead cordgrass tissue,and redwing blackbirds,sparrows,rodents,rabbits,and deer feed directly on the cordgrass.Each tidal cycle carries plant meterial into the offshore water to be uesd by the subtidal organisms. Spartina is an exceedingly competitive plant.It spreads primarily by under

51、ground stems;colonies form when pieces of the root system or whole plants float into an area and take root or when seeds float into a suitable area and germinate.Spartina establishes itself on substrates ranging from sand and silt to gravel and cobble and is tolerant of salinities ranging from that

52、of near freshwater (0.05 percent)to that of salt water(3.5 percent).Because they lack oxygen,marsh sediments are high in sulfides that are toxic to most plants.Spartina has the ability to take up sulfides and convert them to sulfate,a form of sulfur that the plant can use;this ability makes it easie

53、r for the grass to colonize marsh environments.Another adaptive advantage is Spartinas ability to use carbon dioxide more efficiently than most other plants.These characteristics make Spartina a valuable comonent of the estuaries where it occurs naturally.The plant functions as a stabilizer and a se

54、diment trap and as a nursery area for estuarine fish and更多TPO托福相关资料请联系QQ1372661595 22Question 7 of 14Paragraph 4 are marked with SpartinaSpartina alterniflora,known as cordgrass,is a deciduous,perennial flowering plant native to the Atlantic coast and the Gulf Coast of the Unit

55、ed States.It is the dominant native species of the lower salt marshes along these coasts,where it grows in the intertidal zone(the area covered by water some parts of the day and exposed others).These natural salt marshes are among the most productive habitats in the marine environment.Nutrient-rich

56、 water is brought to the wetlands during each high tide,making a high rate of food production possible.As the seaweed and marsh grass leaves die,bacteria break down the plant meterial,and insects,small shrimplike organisms,fiddler crabs,and marsh snails eat the decaying plant tissue,digest it,and ex

57、crete wastes high in nutrients.Numerous insects occupy the marsh,feeding on living or dead cordgrass tissue,and redwing blackbirds,sparrows,rodents,rabbits,and deer feed directly on the cordgrass.Each tidal cycle carries plant meterial into the offshore water to be uesd by the subtidal organisms.Spa

58、rtina is an exceedingly competitive plant.It spreads primarily by underground stems;colonies form when pieces of the root system or whole plants float into an area and take root or when seeds float into a suitable area and germinate.Spartina establishes itself on substrates ranging from sand and silt to gravel and cobble and is tolerant of salinities ranging from that of near freshwater (0.05 percent)to that of salt water(3.5 percent).Because they lack oxygen,marsh sediments are high in sulfides that are t