UNIT 2 单元主题训练
Ⅰ.阅读理解
Hidden beneath the surface in the roots of Earths astonishing and diverse plant life, there exists a biological superhighway linking together the members of the plant kingdom in what researchers call the “wood wide web”．
The network is comprised of thin threads of fungus (真菌) that grow outwards underground up to a few metres from its partnering plant, meaning that all of the plant life within a region likely connected to one another.The partnership is beneficial for both parties involved, plants provide carbohydrates (碳水化合物) to the funguses and in exchange, the funguses aid in gathering water and providing nutrients to its partnering plant.
A study conducted by Rensen Zeng of the South China Agricultural University found that this also allowed for plants to warn one another of potential harm.The study showed Broad Beans used the fungal network to spy on one another for upcoming danger.
Like our Internet, this fungal connectivity is also full of crime.Some plants, such as Golden Marigolds have been found to release poisons into the network to slow down the growth of surrounding plants in the fight for water and light.Other plants, such as the Phantom Orchid, do not have the chlorophyll (叶绿素) and must get the necessary nutrients from surrounding plants.
Research suggests that animals such as insects and worms may be able to detect slight exchanges of nutrients through the network, allowing them to more easily find delicious roots to feed on; however, this has not been conclusively made clear in experimentation.The more we learn about this phenomenon, the more our understanding of the plant life of our planet will continue to change.Perhaps one day, we may be able to map out these complex networks entirely.
语篇解读：本文是一篇说明文。文章主要讲述了将植物王国成员连接在一起的高速公路，被研究人员称之为“木网”。
1．What is the function of the first paragraph
A．To explain the aim of the web.
B．To introduce the main topic.
C．To give definition of diverse life.
D．To show the importance of plants.
解析：选B 推理判断题。根据文章的第一段内容及下文的描述可知，文章主要讲述将植物王国成员连接在一起的高速公路。由此可知，第一段的作用是引入话题。
2．The criminal behaviour of plants can be seen as a way to________.
A．compete for survival
B．gather more water
C．take in sunlight
D．break natural rules
解析：选A 推理判断题。根据文章的第四段可知，有些植物释放毒素是为自己获得营养的。由此推断，植物的犯罪行为可以看作是一种生存竞争的方式。
3．What does the last paragraph suggest
A．Animals can also feed on the fungus.
B．Nutrient exchanges are too slight to detect.
C．No experiment can prove the phenomenon.
D．More needs to be done to work out the network.
解析：选D 推理判断题。根据文章最后一段最后两句可推断，最后一段暗示了需要做更多的工作来了解植物的网络问题。
4．Which can be the best title for the text
A．The Partnership between Plants
B．The Unknown Roots of the Earth
C．The Superhighway Linking the Plants
D．The Mysterious Map Changing the World
解析：选C 标题归纳题。文章主要讲述将植物王国成员连接在一起的高速公路。
Ⅱ.阅读七选五
Have you ever thought about travelling abroad but worried that you can't afford to visit all the places on your wish list That doesn't mean you have to choose to stay at home.With a careful preparation, you can travel practically.How __5__ Here are some suggestions for getting your accommodation for free or next to nothing.
__6__ This exchange includes trading homes for a fixed time that both sides agreed on.It works best if your home is in a place where someone wants to pay a visit, and of course, your dates coincide.__7__
Or how about being a caretaker Now things start to get interesting.__8__ If you're up for watering plants, taking care of the kitties now and then, and generally doing what needs to be done around the house, then you can stay for free.Learn more and start your search for a care taking place by surfing the Internet.
There is another choice.__9__ Consider volunteer work or paid work exchange.If you've got a unique skill set, make the most of it and work for your accommodation rather than pay for it.It is also a good way to get insights into the local culture and lifestyle.
A．You can work for your accommodation.
B．Try home exchange.
C．Try to find it by yourself.
D．By thinking out of the box when it comes to where you stay.
E．There are many websites which you can use to look for fellow traders.
F．You can find swappers in the books.
G．You don't have to share your own bedrooms with somebody else but to look after someone else's.
语篇解读：本文介绍了几种海外旅行时可以节省住宿费用的方法。
5．选D 回答空前How提出的问题，用by doing。
6．选B 空后的内容介绍了换房旅行的具体做法，故本段的主题是房屋交换。
7．选E 本段的关键词是交换，而如何找到交换房屋的对象是很多人要考虑的，E项给出了这方面的建议。
8．选G 本段的主题是告诉读者除了交换房屋外，要想借住他人房屋，有一个义务就是要照看好房子。
9．选A 空后的内容介绍了用工作换取住宿的做法，A项与之吻合。
Ⅲ.完形填空
Ted Schredd doesn't like cars.He wants people to stop __10__ because cars make the air dirty.Ted had a(n) __11__.He said，“I'm going to cycle(骑自行车) around North America.I want to show everyone that if more people ride bikes，the air will be __12__.”
He left his __13__ with D|S160 in his pocket.When he __14__ San Diego，he met another cyclist.The cyclist __15__ Ted to speak at a big meeting about the environment.Two hours later，Ted was on a plane to the environmental conference and to a big __16__！
While he was at the conference，he met Deanna.It was __17__ at first sight！They talked for six hours.The next day，Ted asked Deanna to __18__ the trip with him.Deanna said yes, and was on the road with Ted 20 days later!
“It was __19__ at first，” said Deanna.“Ted got up __20__ every morning，around 6：00 am，but I wanted to sleep until noon.” After a few days，they started having fun.They had free meals in many restaurants，and __21__ in people's backyards during the night.__22__， they made many new friends on the way.
On their way back to Vancouver，they got __23__.People wished them to grow old and happy together.They now want to __24__ a book about the trip.“We want people to know that you can be an environmentalist and still have fun，” Schredd said.
语篇解读：本文是一篇记叙文。文章讲述了一位男子骑自行车环游北美，倡议人们绿色出行，并在途中邂逅爱情，终成眷属的故事。
10．A.crying B．smoking
C．driving D．worrying
解析：选C 由文章首句“Ted Schredd doesn't like cars.”可知，他想让人们不要再开车(driving)了。
11．A.idea B．job C．secret D．excuse
解析：选A 由该空后的“I'm going to cycle(骑自行车) around North America.”可知，Ted有一个主意(idea)。
12．A.drier B．thinner
C．cleaner D．thicker
解析：选C 由上文中的“cars make the air dirty”及“if more people ride bikes”可知，如果更多的人骑自行车的话，空气会更加洁净(cleaner)。
13．A.country B．car
C．mother D．hometown
解析：选D 由上文内容可知，Ted要离开家乡(hometown)，骑自行车环游北美。
14．A.reached B．found
C．missed D．saw
解析：选A 由该空前的“He left ...”和该空后的“he met another cyclist”可知，当他到达(reach)圣地亚哥时，他遇到了另一个骑自行车出游的人。
15．A.ordered B．allowed
C．invited D．promised
解析：选C 由下文的“to speak at a big meeting”可知，这个人邀请(invited)Ted在一个会议上发言。
16．A.problem B．surprise
C．holiday D．difference
解析：选B 由下文Ted和Deanna相识、相知并相爱的故事可知，这是一个大的惊喜(surprise)。
17．A.love B．pride C．hate D．doubt
解析：选A 由下文的“They talked for six hours.”和最后一段的“People wished them to grow old and happy together.”可知，他们是一见钟情，故填love。
18．A.plan B．start C．change D．finish
解析：选D 由下文两人一起骑行可知，Ted想让Deanna和他一起完成(finish)这段旅程。
19．A.interesting B．difficult
C．important D．comfortable
解析：选B 由下文的“Ted got up ...，but I wanted to sleep until noon.”可知，刚开始还是有些困难的(difficult)。
20．A.finally B．seriously
C．early D．suddenly
解析：选C 由该空后的“around 6：00 am”可知，Ted起床很早(early)。
21．A.cooked B．slept
C．worked D．waited
解析：选B 由该空后的“during the night”可知，这里是说晚上他们睡(slept)在人们的后院里。
22．A.Instead B．At first
C．Besides D．After all
解析：选C 这里是对前面内容的进一步补充，故填besides。
23．A.paid B．injured
C．punished D．married
解析：选D 由该空后的“People wished them to grow old and happy together.”可知，他们俩结婚(get married)了。
24．A.write B．read C．borrow D．buy
解析：选A 由下文的“We want people to know that you can be an environmentalist and still have fun”可知，他们想写(write)一本关于这次出游的书。
Ⅳ.读后续写
阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。
Our uncle, who lived with us, is a quiet and friendly man.He is fond of hunting and fishing, and it was one of the pleasures of our young life to join him in his trip to the Great Hill, the woods, the ponds, and, best of all, the country brook (小溪)．Of course the most exciting part of the hiking was an afternoon walk through the woods and along the side of the brook.
I remember my first fishing tour, as if it were yesterday, and especially the wise caution of my uncle in that particular instance which takes the form of a proverb of universal application: “Never brag (自夸) about your fish before you catch it.”
After I received the first fishing pole from my uncle, I set off happily with him to the woods.It was a still, sweet day of early summer, and the long afternoon shadows of the trees lay cool across our path: the leaves seemed greener, the flowers brighter, the birds merrier, than ever before.
My uncle, who knew by long experience the points that pickerels (狗鱼) most frequently visited, considerately placed me at the most favorable one.I threw out my line as I had often seen others, and waited anxiously for a bite, moving the bait (饵) on the surface of the water like the leap of a frog.Nothing came of it.“Try again，” said my uncle.Suddenly the bait sank out of sight.“Now for it，” I thought.“Here is a fish at last.” I made a strong pull, and brought up some weeds.Again and again I cast out my line with arms aching, and drew it back empty.Feeling my arms hurting and my spirits sinking, I turned to look at my uncle in a way declaring my intention to give up.“Just try once more，” my uncle said, “We fishermen must have patience.”
注意：1.续写词数应为150左右；
2．请按如下格式作答。
Paragraph 1：
Suddenly something pulled at my line.
Paragraph 2：
So，overcome with my great and bitter disappointment, I sat down.
参考范文：
Paragraph 1：
Suddenly something pulled at my line. Off with it swept the line into deep water.Pulling it up as quickly as I could, I saw a fine pickerel wriggling in the sun.“Uncle！” I cried, looking back in uncontrollable excitement, “I've got a fish！” “Not yet，” said my uncle.As he spoke, I saw the fish shooting into the middle of the stream and there was a splash.I had lost my prize.
Paragraph 2：
So, overcome with my great and bitter disappointment, I sat down. For a time I refused to be comforted, even by my uncle's assurance that there were more fish in the brook.He refitted my bait, put the fishing pole again in my hands, and told me to try my luck once more.“But remember, boy，” he said, with a smile, “Never brag about catching a fish until it is on dry ground.I've seen people doing that more than once, making fools of themselves.It's no use boasting of anything until it's done, nor then, either, for it speaks for itself.”
PAGE
1UNIT 2 单元主题训练
Ⅰ.阅读理解
Hidden beneath the surface in the roots of Earths astonishing and diverse plant life, there exists a biological superhighway linking together the members of the plant kingdom in what researchers call the “wood wide web”．
The network is comprised of thin threads of fungus (真菌) that grow outwards underground up to a few metres from its partnering plant, meaning that all of the plant life within a region likely connected to one another.The partnership is beneficial for both parties involved, plants provide carbohydrates (碳水化合物) to the funguses and in exchange, the funguses aid in gathering water and providing nutrients to its partnering plant.
A study conducted by Rensen Zeng of the South China Agricultural University found that this also allowed for plants to warn one another of potential harm.The study showed Broad Beans used the fungal network to spy on one another for upcoming danger.
Like our Internet, this fungal connectivity is also full of crime.Some plants, such as Golden Marigolds have been found to release poisons into the network to slow down the growth of surrounding plants in the fight for water and light.Other plants, such as the Phantom Orchid, do not have the chlorophyll (叶绿素) and must get the necessary nutrients from surrounding plants.
Research suggests that animals such as insects and worms may be able to detect slight exchanges of nutrients through the network, allowing them to more easily find delicious roots to feed on; however, this has not been conclusively made clear in experimentation.The more we learn about this phenomenon, the more our understanding of the plant life of our planet will continue to change.Perhaps one day, we may be able to map out these complex networks entirely.
1．What is the function of the first paragraph
A．To explain the aim of the web.
B．To introduce the main topic.
C．To give definition of diverse life.
D．To show the importance of plants.
2．The criminal behaviour of plants can be seen as a way to________.
A．compete for survival
B．gather more water
C．take in sunlight
D．break natural rules
3．What does the last paragraph suggest
A．Animals can also feed on the fungus.
B．Nutrient exchanges are too slight to detect.
C．No experiment can prove the phenomenon.
D．More needs to be done to work out the network.
4．Which can be the best title for the text
A．The Partnership between Plants
B．The Unknown Roots of the Earth
C．The Superhighway Linking the Plants
D．The Mysterious Map Changing the World
Ⅱ.阅读七选五
Have you ever thought about travelling abroad but worried that you can't afford to visit all the places on your wish list That doesn't mean you have to choose to stay at home.With a careful preparation, you can travel practically.How __5__ Here are some suggestions for getting your accommodation for free or next to nothing.
__6__ This exchange includes trading homes for a fixed time that both sides agreed on.It works best if your home is in a place where someone wants to pay a visit, and of course, your dates coincide.__7__
Or how about being a caretaker Now things start to get interesting.__8__ If you're up for watering plants, taking care of the kitties now and then, and generally doing what needs to be done around the house, then you can stay for free.Learn more and start your search for a care taking place by surfing the Internet.
There is another choice.__9__ Consider volunteer work or paid work exchange.If you've got a unique skill set, make the most of it and work for your accommodation rather than pay for it.It is also a good way to get insights into the local culture and lifestyle.
A．You can work for your accommodation.
B．Try home exchange.
C．Try to find it by yourself.
D．By thinking out of the box when it comes to where you stay.
E．There are many websites which you can use to look for fellow traders.
F．You can find swappers in the books.
G．You don't have to share your own bedrooms with somebody else but to look after someone else's.
Ⅲ.完形填空
Ted Schredd doesn't like cars.He wants people to stop __10__ because cars make the air dirty.Ted had a(n) __11__.He said，“I'm going to cycle(骑自行车) around North America.I want to show everyone that if more people ride bikes，the air will be __12__.”
He left his __13__ with D|S160 in his pocket.When he __14__ San Diego，he met another cyclist.The cyclist __15__ Ted to speak at a big meeting about the environment.Two hours later，Ted was on a plane to the environmental conference and to a big __16__！
While he was at the conference，he met Deanna.It was __17__ at first sight！They talked for six hours.The next day，Ted asked Deanna to __18__ the trip with him.Deanna said yes, and was on the road with Ted 20 days later!
“It was __19__ at first，” said Deanna.“Ted got up __20__ every morning，around 6：00 am，but I wanted to sleep until noon.” After a few days，they started having fun.They had free meals in many restaurants，and __21__ in people's backyards during the night.__22__， they made many new friends on the way.
On their way back to Vancouver，they got __23__.People wished them to grow old and happy together.They now want to __24__ a book about the trip.“We want people to know that you can be an environmentalist and still have fun，” Schredd said.
10．A.crying B．smoking
C．driving D．worrying
11．A.idea B．job C．secret D．excuse
12．A.drier B．thinner
C．cleaner D．thicker
13．A.country B．car
C．mother D．hometown
14．A.reached B．found
C．missed D．saw
15．A.ordered B．allowed
C．invited D．promised
16．A.problem B．surprise
C．holiday D．difference
17．A.love B．pride C．hate D．doubt
18．A.plan B．start C．change D．finish
19．A.interesting B．difficult
C．important D．comfortable
20．A.finally B．seriously
C．early D．suddenly
21．A.cooked B．slept
C．worked D．waited
22．A.Instead B．At first
C．Besides D．After all
23．A.paid B．injured
C．punished D．married
24．A.write B．read C．borrow D．buy
Ⅳ.读后续写
阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。
Our uncle, who lived with us, is a quiet and friendly man.He is fond of hunting and fishing, and it was one of the pleasures of our young life to join him in his trip to the Great Hill, the woods, the ponds, and, best of all, the country brook (小溪)．Of course the most exciting part of the hiking was an afternoon walk through the woods and along the side of the brook.
I remember my first fishing tour, as if it were yesterday, and especially the wise caution of my uncle in that particular instance which takes the form of a proverb of universal application: “Never brag (自夸) about your fish before you catch it.”
After I received the first fishing pole from my uncle, I set off happily with him to the woods.It was a still, sweet day of early summer, and the long afternoon shadows of the trees lay cool across our path: the leaves seemed greener, the flowers brighter, the birds merrier, than ever before.
My uncle, who knew by long experience the points that pickerels (狗鱼) most frequently visited, considerately placed me at the most favorable one.I threw out my line as I had often seen others, and waited anxiously for a bite, moving the bait (饵) on the surface of the water like the leap of a frog.Nothing came of it.“Try again，” said my uncle.Suddenly the bait sank out of sight.“Now for it，” I thought.“Here is a fish at last.” I made a strong pull, and brought up some weeds.Again and again I cast out my line with arms aching, and drew it back empty.Feeling my arms hurting and my spirits sinking, I turned to look at my uncle in a way declaring my intention to give up.“Just try once more，” my uncle said, “We fishermen must have patience.”
注意：1.续写词数应为150左右；
2．请按如下格式作答。
Paragraph 1：
Suddenly something pulled at my line.
Paragraph 2：
So，overcome with my great and bitter disappointment, I sat down.
PAGE
1
