【題目】 As far back as the age of dinosaurs millions of years ago, turtles(海龜) wandered around the Earth. Even nowadays, it is generally assumed that turtles are the world's steadiest creature.

However, a new research shows 61 percent of the 356 species of turtles are already threatened or no longer exist. The destruction of their homes, disease, climate change and other reasons have caused their population to drop sharply. In a new study published in the journal BioScience, a team of scientists from various institutions claims that turtles are one of the most threatened among the major vertebrate(脊椎動物) groups.

This could, the authors say, have serious consequences for the ecology. Turtles contribute to the health of many environments, including desert, wetland, freshwater and marine ecosystems, and the decline may lead to bad effects on other species, including humans, they explain. Whit Gibbons, seruor author and professor at the Utuversity of Georgia's Savannah River Ecology Laboratory, says in a statement that the intention of the study is to inform people about the vital ecological roles of turtles.

One of the important qualities of turtles is how diverse they are when it comes to food. This allows them to have a major impact on food webs of their homes all over the world. In some areas, the density(密度) of the turtle population makes them an important part of the ecosystem. With their gathering, other species that feed on them and their eggs are sure to have a large pool of food.

For plants, turtles are also extremely important as they distribute the seeds of many plant species. When they eat some seeds are not destroyed by the digestive process and instead make their way out of the animals' body. Some turtles are the main dispersal(傳播 ) agents of certain plants and their seeds.

These are only a few yet very vital roles that turtles play in the ecological landscape. Unfortunately, many species are in serious decline and in danger of disappearing completely.

【1】What does the new study aim to do?

A. To save the grand vertebrate groups on earth. .

B. To wam people of turtles' terrible situation.

C. To make the importance of turtles' roles known.

D. To claim turtles may be related to dinosaurs.

【2】How might the disappearance of turtles influence certain plants?

A. Speed up these plants' disappearing.

B. Put an end to these plants' seeds spreading.

C. Allow more. seeds to grow into plants.

D. Give these plants no chance of survival. .

【3】Which of the following shows the structure of the text?

I:Introduction P:Point Sp: Sub-point(次要點(diǎn) ) C:Conclusion

A. B.

C. D.

【4】What can be a suitable title for the text?

A. Turtles Are Sure to Stop Existing.

B. The Ecology Will Change with Turtles.

C. Decline of Turtles Threatens the World.

D. Turtles' Dying Out Worldwide Matters a Lot.

【答案】

【1】C

【2】A

【3】B

【4】D

【解析】

本文是一篇說明文，介紹了目前海龜數(shù)量大范圍減少的狀況以及海龜?shù)拇嬖趯ι鷳B(tài)系統(tǒng)的重要作用。

【1】細(xì)節(jié)理解題.根據(jù)第三段的” the intention of the study is to inform people about the vital ecological roles of turtles“可知,這個研究的目的是讓人們了解海龜對生態(tài)的重要作用，故C項(xiàng)正確。

【2】推理判斷題。根據(jù)第五段內(nèi)容可知，海龜通過吃下植物的種子然后將其排出體外來進(jìn)行植物種子的傳播，一些海龜是某些植物及其種子的主要傳播媒介，由此可推知，海龜?shù)南б部赡芗铀龠@些植物的滅絕，故A項(xiàng)正確。

【3】推理判斷題。通讀全文并分析文章結(jié)構(gòu)可知，第一段是全文的引言( Introduction),引入海龜這一話題;第二段是要點(diǎn)一( Point1),介紹了海龜數(shù)量驟減的情況;第三段是要點(diǎn)二( Point2),總述海龜對生態(tài)系統(tǒng)的作用;第四、五段都是要點(diǎn)二的次要點(diǎn)(Sp1和Sp2),分別介紹了海龜在生態(tài)系統(tǒng)中所起的兩個作用;最后一段對全文進(jìn)行總結(jié)( Conclusion)，故B項(xiàng)正確。

【4】主旨大意題。通讀全文可知，本文介紹了目前海龜數(shù)量大范圍減少的狀況以及海龜?shù)拇嬖趯ι鷳B(tài)系統(tǒng)的重要作用，故D項(xiàng)（世界范圍內(nèi)海龜?shù)南в绊懼卮螅┳钅芨爬ū疚拇笠猓?/span>D項(xiàng)正確。

本篇第2題B項(xiàng)的干擾性較大，但根據(jù)第五段第一句" Some turtles are the main dispersal(傳播) agents of certain plants and their seeds可知,一些海龜是某些植物及其種子的主要傳播媒介,但這只是指物及其種子的傳播媒介之一，因此并不能說明海龜?shù)南Ь鸵馕吨@些植物的種子徹底不能得到傳播了，故排除B頂。

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：

【題目】假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處錯誤，每句中最多有兩處。錯誤涉及一個單詞的增加、刪除或修改。

增加：在缺詞處加一個漏字符號（∧），并在其下面寫出該加的詞。

刪除：把多余的詞用斜線(＼)劃掉。

修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。

注意：1．每處錯誤及其修改均僅限一詞；

2．只允許修改10處，多者（從第11處起）不計分。

I'm so annoying at school and at home because of my best friend who is perfect at everything. She is of the smartest kid in the grade, good at sports. She can play violin really good. She is very creative at anything. But when he gets a 940/0 quiz back, she says she does a horrible job at it.

She also says I probably got best than her when she knows I didn't. I am such depressed and feel

like an ugly, stupid, not-good-at-anything kind of person with no friend.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】根據(jù)短文內(nèi)容，從方框中選擇恰當(dāng)?shù)膯卧~填空。每個單詞只能用一次，每空一詞。

As you may know, coral(珊瑚)is not a plant, but an animal. However, coral reefs(珊瑚礁)around the world are in【1】. Here is a piece of bad news. Thailand will close one of its beaches to protect its coral 【2】 business activities for tourists. The beach is so famous that 【3】of tourists put it on their wish lists. More than 5,000 visitors visit it a day. They arrive by boat. This does【4】 harm to the coral reefs. Most of the coral has died. The beach will be closed between June and September to let the coral come【5】to life．

Experts(專家)say that 80％of Thailand’s coral reefs have been【6】. Too many tourists 【7】 a lot of pollution to these beaches.An expert said the biggest problems were hotels by the beaches, boats, and plastic waste in the sea. He believed the 【8】choice was to close the beaches forever. He said, “I hope the 【9】 can take steps to protect the coral reefs. At the same time, I also hope all of us should【10】our best to protect the environment around us.”

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】假定你是李華，你乘坐時空機(jī)器穿越到過去和未來之后又回到現(xiàn)在。請你寫一篇演講稿，與同學(xué)們簡要談?wù)勀愕乃娝�。�?nèi)容包括

注意1.詞數(shù)100左右

2.可以適當(dāng)增加細(xì)節(jié)，以使行文連貫

3.開頭和結(jié)尾已給出，不計入總詞數(shù)。

Boys and girls, good afternoon! I’m excited to stand here to share the travel into the past and the future with my Time Machine.

_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Thank you!

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯誤，每句中最多有兩處。每處錯誤僅涉及一個單詞的增加、刪除或修改。

增加：在缺詞處加一個漏字符號（∧），并在其下面寫出該加的詞。

刪除：把多余的詞用斜線（\）劃掉。

修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。

注意：1. 每處錯誤及其修改均僅限一詞；2. 只允許修改10處，多者（從第11處起）不計分。

When I was in Grade 8, my family move to another city, so I had to go to a new school. Being in a unfamiliar place, I felt lonely and frightening. Worse still, some subjects were so difficult to learn from that I had no idea how to adapt to the new environment. My teachers noticed my problems but often encouraged me. With their help, I made some progresses in my lessons. However, it wasn’t easy make friends. My classmates had already known each other. I found it hardly to fit in. My mother suggested that I chatted with them. Following his advice, I soon got a few good friends.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下短文。短文中共有10處錯誤，每句中最多有兩處。錯誤涉及一個單詞的增加、刪除或修改。

增加：在缺詞處加一個漏字符號（∧），并在此符號下面寫出該加的詞。

刪除：把多余的詞用斜線（＼）劃掉。

修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。

注意：1.每處錯誤及其修改均僅限一詞；

2.只允許修改10處，多者（從第11處起）不計分。

Good morning, everyone!

Nowadays, topics concerned with health are always drawing our attention. As is knew to all, health is the most important thing in the world. But how can we keep health? My views are as follow.

Firstly, eat in a proper way. It's good for us to eat which are rich in vitamins and minerals every day, that was, some fresh vegetables and fruit. And breakfast is necessary, that gives us energy for the morning. Secondly, exercise regularly. Exercise can benefit physically and mentally. Thirdly, get enough sleep. Stay up late is bad for our health. Go to bed early and we will feel refreshed in next morning.

Last and not least, enjoy the time with our friends and family.

That's all.Thank you!

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】My voice was so little and the shop owner had to bend down to hear_______ I wanted to buy.

A. what it was B. it was what

C. what it was that D. what was that

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】

Scientists have discovered a new kind of invisible ink. It’s called water. And all you need for this secret-messaging ink to work is to write with it on a super-hi-tech piece of paper coated with special chemicals. 【1】 It shows up darker than the surrounding paper under UV(紫外線的) light.

When the message has been read and needs to be hidden again, get out your hairdryer, and blow some warm air on the paper. 【2】

Using hot air from a hairdryer for 15-30 seconds, you were able to reuse the special paper up to 30 times because the heat reorganized the chemical structure of the paper coating. 【3】

The invention was made by a group of scientists in China, led by Qiang Zhao of the Institute of Advanced Materials, Nanjing University of Posts and Telecommunications.

Although much of modern communication is digital(數(shù)碼的), there are still some situations in which it is important to send messages on a piece of paper, such as when the people don’t have Internet. 【4】 But the problem has always been how to get rid of a message once it has been shown so no one else can read it.

【5】. To use it, write with the lemon juice on ordinary paper, iron(熨) the paper with a hot iron and the hidden message will appear. The downside(缺點(diǎn)) is that the paper has to be destroyed to hide the message so no one else can read it.

A.How to make the invisible ink? Follow the steps.

B.Invisible inks have long been used to send secret messages.

C.Without the heat, the message stayed visible for up to three months.

D.Previously, the most readily available invisible ink was lemon juice.

E.Shine a UV light on the coated paper and the water message becomes visible.

F.Then the message will be gone and the paper can be reused, which keeps costs low.

G.Putting water on the paper broke up the structure of the chemicals it was coated with.

查看答案和解析>>

科目：高中英語 來源： 題型：

【題目】假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯誤，每句中最多有兩處。錯誤涉及一個單詞的增加、刪除或修改。

增加：在缺詞處加一個漏字符號（∧），并在其下面寫出該加的詞。

刪除：把多余的詞用斜線（\）劃掉。

修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。

注意：1.每處錯誤及其修改均僅限一詞；

2.只允許修改10處，多者（從第11處起）不計分。

I don’t remember exact how old I was when I began to ride a bike. I only remembered how I practiced riding a bike in early years. When I first successfully rode a bike, that remains a vivid memory, my brother helped me with holding the back seat of the bike while I was riding. “Wow, I did it!”, cried I, as soon as he noticed I was riding without his hands hold it! I learnt quickly, and soon, even though my feet were not touching the ground, but I was able to cycle around six kilometer a day to school! It’s so lovely to remember which happened at that time.

查看答案和解析>>

同步練習(xí)冊答案