Unit 5 Into the unknown

Section Ⅰ Starting out amp; Understanding ideas

單詞拼寫 根據(jù)首字母或漢語(yǔ)提示，用本部分所學(xué)單詞的正確形式填空。

1.Landing on Mars may inspire more people to learn about science and a .

2.My brother b himself in his studies when in high school and as a result he entered his ideal university.

3.A c is a human society with its own social organisation and culture.

4.Those suggestions shouldn’t be d without thinking about them.

5.The two （運(yùn)河） have proved useful to the county in many ways.

6.One dead man was found in the （廢墟） almost two hours after the explosion.

7. （離棄） a child under two years old is a crime.

8.The remarkable （擴(kuò)大） of public high schools from 1900 to 1920 was very important.

選擇填空 用方框中所給短語(yǔ)的適當(dāng)形式填空。

all the more at one’s peak correspond to fall into ruin on top of

1.A large number of churches after the earthquake.

2.The wing of a bird the arm of a man.

3.Jenny likes the book for its beautiful illustrations.

4.As we know， the Tang Dynasty was in the early 8th century.

5. it being dark， it rained， which made the going even more difficult.

課文語(yǔ)法填空

Intrigued by Maya civilisation from a very young age， 15-year-old Canadian William Gadoury thought he had made an incredible 1 （discover） from his study of ancient star charts. Through comparison， he found that the locations of the 117 known Maya cities correspond to the positions of the stars. Based on this， he believed he had spotted an unknown Maya city 2 （bury） deep in the jungle. Although his theory has been dismissed by scholars， it shows 3 powerful the secrets of Ancient Maya civilisation are among people.

It isn’t difficult to see why. Extending south from parts of what we now know as Mexico into Central America， Maya civilisation 4 （surround） by mystery since its rediscovery in the 19th century. The Maya built 5 （impress） palaces and temples， 6 （include） their representative step pyramids. What is most extraordinary about these complex structures is how they were built

7 the use of wheels， metal tools or even animal power. The Maya’s understanding of mathematics and astronomy was also quite amazing. They applied this understanding to the Maya calendar， which was accurate to within 30 seconds per year. On top of all this was 8 achievement unique in the Americas at that time： a true writing system. It contained more than 800 characters， with some signs representing animals， people and objects and others representing 9 （syllable）. It was a writing system so complicated that， so far， no one has been able 10 （interpret） it completely.

1. " 2. " 3. " 4. " 5.

6. " 7. " 8. " 9. " 10.

閱讀理解

A blue hole is a special kind of underwater cave found inland or in the sea， which forms when the earth above a cave falls in and water fills the space.

An inland blue hole’s water is very still and has different layers. A layer of fresh rainwater floats on top of salt water; the fresh water keeps oxygen from the atmosphere from reaching the salt water; brightly colored bacteria （細(xì)菌） live where the two layers meet.

Diving into blue holes is extremely dangerous. Near the top of the blue hole， there is a layer of toxic gas， which causes itching， dizziness， and—in large amounts—death. Divers must also be fast. They have to get in and out of a cave before their oxygen runs out. Additionally， divers have to follow a guideline as they swim through a blue hole because it is very dark inside. Without the guideline， they may get lost.

If blue holes are so dangerous， why do explorers and scientists risk their lives to explore them？ The reason is that these underwater caves can provide valuable scientific information. They provide clues about geology， archaeology， and biology. For example， some blue hole creatures， such as the remipede， probably haven’t changed for millions of years.

The blue holes could even provide clues about astrobiology. For example， divers have found bacteria there that can live without oxygen. Astrobiologist Kevin Hand says the bacteria may be similar to forms of life that might exist on Jupiter’s fourth largest moon， Europa. “Our study of life’s extremes on Earth，” he says， “can help increase our understanding of habitable environments off Earth.”

1. What is the first paragraph mainly about？

A. The structure of a blue hole. B. The location of a blue hole.

C. The formation of a blue hole. D. The definition of a blue hole.

2. Where can bright-colored bacteria be found in a blue hole？

A. In the saltwater layer.

B. In the freshwater layer.

C. In between the freshwater and saltwater layers.

D. In both of the freshwater and saltwater layers.

3. What are blue holes like according to the text？

A. Oxygen-free and lifeless. B. Poisonous and dark.

C. Death zones and mazelike. D. Free of air and light.

4. Why do explorers and scientists like to explore blue holes？

A. To find more unusual life on Earth. B. To get scientific information.

C. To know what life was like in old times. D. To study oxygen-free environments.

閱讀七選五

We live surrounded by advanced technology. 1 We can get the information we want immediately over the Internet. With various technologies surrounding us， it’s easy to wonder how ancient people got anything done.

Actually， all of our modern things are based on older technologies. Ancient people didn’t necessarily have steel or wheels or， electronic communication. Yet， they built monuments （紀(jì)念碑） even bigger than Stonehenge. 2 And ancient Egyptians built the pyramids—with huge mystery rooms inside.

3 The first “kitchen” flames were still older. Ancient human relatives cooked food over fires in Europe 800，000 years ago. The first spear-throwers （投矛器） threw their weapons 279，000 years ago—before modern humans existed.

At first， scientists long believed that the ancients who lived 80，000 years ago were the first to throw spears with stone tips. Then came the discovery of 279，000-year-old stone spear tips in Ethiopia. These pushed the date back. 4

Scientists have been trying to figure out how ancient people developed their tools and built their cities and monuments. 5 They are also recreating ancient techniques themselves—from rolling pyramid rocks to testing out ancient tar （瀝青） recipes. They detect mystery holes in Great Pyramid of Giza： Using high-tech tools normally reserved for particle-physics research， scientists have found a large hidden hole inside Egypt’s Great Pyramid of Giza. They have made some great discoveries， but they know there are still a lot of things waiting to be discovered.

A. Ancient people were really clever.

B. Not all of these technologies do good to people.

C. They also raised huge stone heads on Easter Island.

D. For example， there are very tall buildings and spaceships.

E. They use modern technologies to explore the ancient places.

F. Not all of advanced technologies were limited to modern people.

G. And it has been suggested that even prehuman species hunted with spears.

1. " 2. " 3. " 4. " 5.

Section Ⅱ Using language

單句語(yǔ)法填空 在空白處填入1個(gè)適當(dāng)?shù)膯卧~或括號(hào)內(nèi)單詞的正確形式。

1.Without any map， their ship eventually hit a（n） （chart） rock.

2. make the river more beautiful are the lotus plants growing in the water.

3.The police have completed their （investigate） into the accident.

4.The main question is we ought to call in a family doctor or not.

5.Jason （shrink） back against the wall as he heard the enemies approaching.

6.Bob forced himself （subdue） and overcome his fears.

7.Adam always works hard in spite of the fact he is not in good health.

8.Bored with the conversation， Lisa （retreat） to her bedroom last night.

同義句轉(zhuǎn)換 結(jié)合名詞性從句的用法轉(zhuǎn)換下列句子。

1.Most Chinese people are concerned about air pollution nowadays.

most Chinese people are concerned about nowadays.

2.The reason why she won the Nobel Prize is that she discovered a new treatment for that disease.

She discovered a new treatment for that disease. That is .

3.How does the English language work？ All these listening lessons can allow you to learn it.

All these listening lessons can allow you to learn .

4.Do you want your arms inside or outside the sleeping bag？ That is the main question.

you want your arms inside or outside the sleeping bag.

5.Who was involved in the conversation？ Alice declined to announce it.

Alice declined to announce .

補(bǔ)全句子 根據(jù)漢語(yǔ)句意，用名詞性從句補(bǔ)全句子。

1. 小偷們匆匆逃走，確實(shí)讓房子的主人非常無(wú)助。

really made the owner of the house helpless.

2. Tim不明白為什么公司在雇用他之前要調(diào)查他。

Tim didn’t understand before they employed him.

3. 這就是昨天Bob能成功避開(kāi)麻煩的原因。

That was successfully yesterday.

4. 我們確實(shí)相信開(kāi)工之前試水是有必要的。

We do believe before starting the work.

5. 地理老師問(wèn)學(xué)生們是否對(duì)未知的事物感興趣。

The geography teacher asked the students .

完形填空

The cultures of the East and the West really distinguish from each other a lot. This is because the culture systems are two different systems on the whole.

The origin of the eastern culture is 1 from two countries： China and India. Both of the two cultures are gestated （孕育） by 2 . In China， the mother river is the Yellow River， while the Indian one is the Hindu River. These two cultures have 3 for several thousand years and formed their own styles. Then in the Tang Dynasty of China， the Chinese culture 4 went overseas to Japan， mixed into the Japanese society and 5 the Japanese culture nowadays. Though a bit different from the Chinese one， it 6 to the same cultural system.

When the two mother rivers gave birth to the eastern culture， another famous culture was 7 on the Mesopotamian Plain： the Mesopotamian Civilization. This civilization later on developed into the cultures of the Ancient Greece and Ancient Rome. And these two are well-known as the 8 of the European culture. Like the Chinese 9 ， the European one is also related to waters. When the colonists （殖民者） of England 10 in America， their culture went with them over the Atlantic Ocean. So the American culture doesn’t 11 from the European one a lot.

At the same time， the 12 of the language systems adds to the cultural differences. In the East， most languages belong to the pictographic （象形文字的） languages while the Western languages are 13 based on the Latin system.

Other 14 like human race difference count as well. However， due to the far distance and the steep areas between the East and the West， the two cultures seldom 15 until recent centuries. Therefore， they grew up totally in their own ways with almost no interference from the other.

1. A. mainly B. merely C. truly D. finally

2. A. mountains B. plains C. lakes D. rivers

3. A. developed B. improved C. originated D. protected

4. A. suddenly B. quietly C. gradually D. naturally

5. A. defended B. interrupted C. ended D. shaped

6. A. comes B. belongs C. brings D. adds

7. A. brought up B. carried out C. given out D. picked up

8. A. result B. sign C. base D. content

9. A. saying B. climate C. language D. culture

10. A. joined up B. settled down C. broke down D. went up

11. A. date B. suffer C. result D. differ

12. A. distinction B. contact C. appearance D. collection

13. A. properly B. hardly C. simply D. mostly

14. A. benefits B. factors C. thoughts D. meanings

15. A. transform B. display C. communicate D. expand

語(yǔ)法填空

Passage 1

The Yangshao culture was a Neolithic civilisation 1 existed extensively along the valleys of the Wei River and the middle Yellow River in northern China. The Yangshao culture dates from around 5000 BC to 3000 BC and was one of the 2 （early） settled cultures in China. It was named after Yangshao， the first 3 （represent） village of this culture， which was discovered in 1921 in Henan Province. The culture flourished 4 （main） in the provinces of Henan， Shaanxi， and Shanxi. Over a thousand Yangshao culture sites have been found 5 （include） the Banpo Site in Xi’an， and Jiangzhai at Lintong County， Shaanxi Province. Shaanxi 6 （regard） as the centre of this culture because it possesses the most Yangshao sites.

It is reported that the Yangshao culture exhibits 7 first evidence of settled agriculture in China， producing millet， wheat， rice， kaoliang， and possibly soybeans. They 8 （keep） domestic animals such as pigs and dogs， chickens， sheep， goats， and cattle， hunted， fished with nets， and gathered fruits and nuts. Yangshao is well-known for its red， painted pottery， 9 （decorate） in white and black with human faces， animals， and geometric （幾何的） designs. The most vivid patterns were human faces， fish designs， deer designs， bird designs， etc. 10 addition， the accessories （配件）， such as sheep head buttons， bird handles and others made the wares more lifelike.

1. " 2. " 3. " 4. " 5.

6. " 7. " 8. " 9. " 10.

Passage 2

It is reported that the “Monster of Lake Tianchi” is back after several recent 1 （sighting）. The director of a local tourist office said the monster seemed to be black in colour， and jumped out of the water like a seal. Though no one 2 （real） got a clear look at the 3 （mystery） creature， a local photographer claimed that its head looked like a horse. A group of soldiers claimed they saw an animal， 4 was greenish-black and had a round head with 10-centimetre horns， swimming for about two minutes. Li Xiaohe claimed to have caught sight of a round black creature 5 （move） quickly through the water. After three or four hundred metres it dived into the water. Ten minutes later the monster appeared again and repeated the action. There 6 （be） reports of monsters in Lake Tianchi since the beginning of the last century. Many people think the monster may be 7 distant cousin of the Loch Ness monster in Scotland. They also think that there might be similar creatures in other lakes around the world. Scientists， 8 ， are sceptical （懷疑的）. They say that the low-temperature lake is unlikely to be able to support such large living creatures. Lake Tianchi is the 9 （high） lake in the world and 10 （cover） an area of about ten square kilometres.

1. " 2. " 3. " 4. " 5.

6. " 7. " 8. " 9. " 10.

Section Ⅲ Developing ideas

單詞填空 用所給詞的適當(dāng)形式填空。

1.Having finished the spending habits of teenagers， the professor presented the results of the to the university. （investigate）

2.The ancient of Central and Latin America were founded upon corn and people there made an effort to create a society. （civilise）

3.Student numbers rapidly now， so the university is busy dealing with the unexpected of student population. （expand）

4.Although there are plans for more oil， the working standard of the is still under discussion. （drill）

5.The baby by its mother， who didn’t understand how bad the was. （abandon）

6.Bill wanted to be an because he started to be interested in observations when he was very young. （astronomy）

單句表達(dá) 根據(jù)括號(hào)內(nèi)提示翻譯句子。

1. 對(duì)于船員來(lái)說(shuō)，這是個(gè)揚(yáng)帆出海的好時(shí)機(jī)。（set sail）

2. 我一直在考慮怎樣才能讓我們的雜志更有趣。（how引導(dǎo)名詞性從句作方式狀語(yǔ)）

3. 這個(gè)設(shè)計(jì)簡(jiǎn)陋的網(wǎng)站提供了進(jìn)入寶貴數(shù)據(jù)庫(kù)的窗口。（offer a window into）

4. 你必須要做的是馬上休息。（what引導(dǎo)主語(yǔ)從句）

5. 你點(diǎn)頭就等于說(shuō)“贊同”。（be equivalent to）

提示寫作

選用所給詞匯或句型造句，并組成一段連貫的短文（80詞左右）。

upwards substance hold the record beyond the reach of

continue to donbsp; either… or… It’s argued that… It’s more likely that…

閱讀理解

A

The ocean is one of the most interesting and breathtaking places on the entire planet. The ocean has witnessed a variety of disappearances and other mysteries， most of which cannot and have not been explained by modern science. Here are some interesting unsolved sea mysteries of the world.

USS Scorpion

In May 1968， USS Scorpion， an American submarine， departed from Norfolk， Virginia， on its way towards the Mediterranean. The crew had almost a decade of experience， and yet the sub disappeared and broke into pieces on the sea floor. There were 99 men aboard the sub， all of whom lost their lives.

Baltic Sea Sub

In the later half of 2014， a mysterious vessel was spotted by Swedish citizens， many of whom described it as a Russian submarine， in the Baltic Sea. The military spent much time in investigating， but found no sign of the mysterious sub.

Bermeja Island

During the 1970s， the Bermeja Island served as a bit of a marker for Mexico and its economic zone. Around 20 years later， the island disappeared without any sign. Along with the island， numerous important documents about major oil reserves also went missing.

Gulf of Mexico Shipwreck

In 2001， ExxonMobil was laying the pipeline （輸油管道） in the Gulf of Mexico when people ran into a shipwreck around 2，600 feet under the surface. Upon exploring the shipwreck， archaeologists

（考古學(xué)家） believed it to be a terrible spell （咒語(yǔ)）， as something would constantly go wrong when they went down to explore.

SS Edmund Fitzgerald

Lake Superior is so large that it behaves like an inland ocean， including terrific storms. In November 1975， one such storm struck the vessel SS Edmund Fitzgerald， which was headed for Detroit. The Fitzgerald disappeared after communications were lost. A week later， a sonar ship found the vessel 500 feet under the water. Nobody was found， though.

1. What is the fact about the sub of USS Scorpion？

A. It lost its way right after departure. B. It disappeared in the Mediterranean.

C. 99 men died before boarding it. D. It had experienced crew.

2. What do people think Baltic Sea Sub and Gulf of Mexico Shipwreck have in common？

A. Both the names of the vessels are unknown. B. Both are highly put on a bad spell.

C. Both are said to be Russian vessels. D. Both are found on the beach.

3. Which mystery is a different kind from the others？

A. Gulf of Mexico Shipwreck. B. SS Edmund Fitzgerald.

C. Bermeja Island. D. USS Scorpion.

B

The rainforests of eastern Australia are home to a stinging （刺人的） tree known as Dendrocnide. Many people call it the gympie-gympie tree—a name given to the tree by indigenous Australians. It’s covered with sharp， needle-like hairs that carry poison. If you brush up against a gympie-gympie tree， you won’t forget it anytime soon. The pain can stay with you for hours， days or weeks. In some cases， it’s been reported to stay for months.

Scientists have long looked for the source of this powerful sting. Now researchers at the University of Queensland have discovered what makes this stinging plant so painful. After carefully studying different kinds of gympie-gympie trees， the scientists were able to separate out different chemicals that the trees produce. This allowed them to identify a group of chemicals that they believed were responsible for the pain.

The researchers created artificial versions of these chemicals， which they call “gympietides”. Sure enough， when the scientists injected （注射） mice with gympietides， the mice licked （舔） at the places where they’d been injected， indicating that they hurt in those places. When the scientists studied the way gympietides were built， they found that they formed a knot-like shape. The shape makes the chemical very stable， which helps explain how the pain lasts so long.

The knot-like shape of the gympietides was similar to the shape of poisons produced by poisonous spiders and cone snails. The scientists were surprised to see three very different kinds of life all use similar poisons. Spiders and cone snails carry poisons because they catch food by stinging other creatures. It’s not clear how stinging helps the gympie-gympie tree. Though the tree’s sting may stop some animals from eating it， it doesn’t stop all animals. Beetles and pademelons （small relatives of the kangaroo） are able to eat the plant without trouble.

4. Why is it unforgettable to touch the stinging tree？

A. It has an unusual smell. B. Its colour will be greatly changed.

C. The suffering caused by it remains long. D. Touching it creates a strange feeling.

5. What do scientists fail to find out about the stinging tree？

A. How it causes great pain. B. What poisons it produces.

C. What’s the consequence of touching it. D. How it benefits from the sting.

6. What can we infer from the last paragraph about the stinging tree？

A. It produces the same poisons as spiders.

B. Poisonous as it is， it also has natural enemies.

C. Animals are wise enough to stay away from it.

D. Only one chemical in it causes pain to the toucher.

7. What can be the best title for the text？

A. Stinging Trees’ Secrets Exposed B. Warning： Trees That Can Poison You

C. Strange Tree Species Found in Australia D. Ways to Avoid Being Hurt by Stinging Trees

完形填空

In September 1991， two German tourists were hiking in the ?tzal Alps near the Italian-Austrian border. When 1 a path， they noticed something sticking out of the 2 . Upon further examination， they discovered that it was part of a 3 . They took a picture and then 4 their discovery to the authorities.

Removing a frozen body from the ice at over 3，200 meters above sea level is never 5 . Bad weather and a 6 of proper excavation （挖掘） equipment made the job even more difficult. After four days of trying， the man’s body was finally 7 and taken to the Institute of Forensic Medicine in Innsbruck.

Otzi， as the archaeologists called him， 8 between 3350 BCE and 3100 BCE. He was about forty-six years old. That was 9 in the Stone Age because people didn’t live very 10 then. He was about 1.6 meters tall， and had blue eyes and long， dark brown hair.

Otzi 11 our ideas about the Stone Age. Before Otzi， archaeologists thought that copper （銅） didn’t arrive in Europe until 2000 BCE. However， Otzi was 12 a copper axe 1，300 years earlier. He was also carrying a bow and arrows， a knife and some wooden tools. He was 13 warm clothes， with a waterproof cloak （斗篷） and leather boots. These 14 show that people at that time possessed technology that was more 15 than previously thought.

1. A. pointing to B. walking along C. breaking into D. talking about

2. A. water B. corner C. hole D. ice

3. A. tree B. rock C. body D. book

4. A. sold B. transported C. explained D. reported

5. A. acceptable B. boring C. cheap D. easy

6. A. combination B. waste C. shortage D. piece

7. A. found B. recognized C. rescued D. removed

8. A. lived B. fought C. explored D. hunted

9. A. weak B. normal C. old D. strange

10. A. healthily B. long C. well D. far

11. A. presented B. knew C. changed D. supported

12. A. carrying B. using C. showing D. packing

13. A. holding B. wearing C. collecting D. making

14. A. animals B. pictures C. tools D. things

15. A. advanced B. beneficial C. interesting D. modern

Writing

話題表達(dá)指導(dǎo)

話題介紹

話題：介紹一種未知現(xiàn)象。要求通過(guò)學(xué)習(xí)課文能口頭或書面介紹一種自然界的神秘或未知現(xiàn)象。寫作時(shí)，可重點(diǎn)突出這種現(xiàn)象如何被發(fā)現(xiàn)以及科學(xué)家對(duì)此的解釋和所呈現(xiàn)的證據(jù)，同時(shí)輔以作者個(gè)人對(duì)神秘現(xiàn)象的認(rèn)識(shí)等。

建議體裁：說(shuō)明文

注意事項(xiàng)：用說(shuō)明文介紹一種現(xiàn)象時(shí)，要考慮說(shuō)明文寫作的三要素：被說(shuō)明對(duì)象的特征、說(shuō)明的順序以及說(shuō)明的方法。

話題 一種神秘或未知現(xiàn)象 人稱 第三人稱為主

體裁 說(shuō)明文 常用時(shí)態(tài) 一般現(xiàn)在時(shí)、一般過(guò)去時(shí)和現(xiàn)在完成時(shí)

題例導(dǎo)學(xué)

題目

下表是關(guān)于自然界之謎“百慕大三角區(qū)（Bermuda Triangle）”的一些信息。請(qǐng)根據(jù)表中信息，寫一篇介紹“百慕大三角區(qū)”的英語(yǔ)短文。

地理位置 發(fā)生的怪事 人們的猜測(cè)

位于北大西洋西部。 自1945年以來(lái)，數(shù)以百計(jì)的飛機(jī)和船只，以及一千多人在這里神秘失蹤，沒(méi)留下任何痕跡。 外星人在作怪；

當(dāng)?shù)靥厥獾奶鞖鈼l件；

沒(méi)人給出讓人信服的理由。

注意：

1．詞數(shù)80左右；

2．可以適當(dāng)增加細(xì)節(jié)，以使行文連貫。

參考詞匯：殘骸 wreckage

思路引導(dǎo)1·要點(diǎn)分析

1．基本信息：名稱及地理位置；

2．涉及怪事：數(shù)以百計(jì)的飛機(jī)和船只以及一千多人在此神秘失蹤等；

3．相關(guān)猜想：外星人、天氣條件等。

思路引導(dǎo)2·本單元語(yǔ)言知識(shí)運(yùn)用

根據(jù)漢語(yǔ)意思及提示翻譯句子。

1.這片區(qū)域位于北大西洋西部，這里有一些怪事發(fā)生。（where引導(dǎo)的非限制性定語(yǔ)從句）

2.自1945年以來(lái)，數(shù)以百計(jì)的船只和飛機(jī)以及一千多人在這里失蹤。（hundreds of， vessel）

3. 人們給出許多理由來(lái)解釋這些令人不安的事件。（why引導(dǎo)的名詞性從句）

4. 其他人則認(rèn)為，這可能是那里的特殊天氣造成的。（被動(dòng)語(yǔ)態(tài)）

5. 也許在未來(lái)，隨著科學(xué)技術(shù)的發(fā)展，我們可以找到答案。（with the development of）

思路引導(dǎo)3·連句成篇

范例展示

There are many unexplained mysteries of the natural world， of which the Bermuda Triangle is a particular one. This is an area of the western north Atlantic， where some strange things happened. Since 1945， hundreds of vessels and planes and over a thousand people have disappeared， leaving no wreckage.

Many reasons why the disturbing incidents occurred in the area of Bermuda Triangle have been given. Some think aliens might have arrived there and taken everything away. Others believe they might be caused by special weather there. But no one can give a believable reason. Maybe in the future we can find the answer with the development of science and technology.

話題表達(dá)

假定你是李華，你的美國(guó)網(wǎng)友Tom給你發(fā)來(lái)郵件，想了解樓蘭古城的相關(guān)情況。請(qǐng)根據(jù)提示，用英語(yǔ)給他回一封電子郵件。要點(diǎn)包括：

1. 位于羅布泊（Lop Nor）西部，曾是古絲綢之路上的一個(gè)小國(guó)；

2. 在古代絲綢之路上占有極為重要的地位；

3. 公元630年神秘消失，現(xiàn)今只留下一片廢墟。

注意：

1. 詞數(shù)80左右；

2. 可以適當(dāng)增加細(xì)節(jié)，以使行文連貫。

Section Ⅳ Presenting ideas

核心短語(yǔ)與句型回顧

短語(yǔ)

1. to" 相當(dāng)于，與……相符

2. … to" 把……應(yīng)用到……上

3. 除……之外

4. 更加

5. at one’s 在……的頂峰時(shí)期

6. ruin （因無(wú)人照料而）衰落，敗落

7. make a 逃跑，逃走

8. 逃命

9. 調(diào)查，檢查

10. 試水，試探

11. of" 避開(kāi)……；從……脫身

12. 不為人知的地方，人類尚未到達(dá)的地方

13. 動(dòng)身踏上（漫長(zhǎng)的）旅途

14. throw 積極投入到……中去

15. think 再三考慮，慎重考慮

16. 避免做，不愿做

17. look 調(diào)查（問(wèn)題）

18. 起航

19. to do" 繼續(xù)做

20. 提供一個(gè)窗口

21. be to" 等同于

22. a record" 保持紀(jì)錄

23. of" 超出……的能力

24. " 最后的邊界

句型

1. that引導(dǎo)的同位語(yǔ)從句

The fact （瑪雅社會(huì)的技術(shù)水平是原始的） makes its achievements all the more incredible and mysterious.

2. when引導(dǎo)的定語(yǔ)從句

Often， making a quick getaway is a sensible and understandable natural response， dating back to a time （我們的祖先為躲避危險(xiǎn)而逃命的時(shí)代）， such as wild animals， lighting and fire.

3. when引導(dǎo)的時(shí)間狀語(yǔ)從句

In more recent times， Norwegian explorer， Roald Amundsen endured one of the most hostile environments on Earth （當(dāng)他在出發(fā)前往未知的領(lǐng)域到達(dá)南極時(shí)）…

4. There is no need to do sth.

While （我們沒(méi)有必要對(duì)新情況畏首畏尾）， we should always look into things first and consider our options.

5. It is + 名詞 + that…

Given our limited knowledge， （這也許不足為奇） exploration of the oceans continues to lead to discoveries in various scientific fields.

請(qǐng)根據(jù)提示，運(yùn)用本單元核心知識(shí)，以“大自然的未解之謎”為話題，介紹一種你所了解的神秘或未知現(xiàn)象。

提示：需用以下句型。

1. One of the most unexplained phenomena I am really curious about is…

2. It is/was… that…

3. The mystery offers a window into…