Period 2 课文整体阅读
1．What does the passage mainly talk about
A．The sixth extinction．
B．The extinctions in history．
C．The steps to avoid extinction．
D．The reason for extinction．
2．What's the main idea of paragraph 2
A．Species die out naturally．
B．How quickly species die out．
C．Why so many species are dying out．
D．What effect human activity has on species．
Read the text carefully and then choose the best answer．
1．When did dinosaurs die out according to the passage
A．More than 500 million years ago．
B．More than 66 million years ago．
C．In the third mass extinction．
D．In the fourth mass extinction．
2．Which of the following is one of unnatural reasons for extinctions
A．Volcanic eruptions．
B．Asteroids hitting the Earth．
C．Changes in sea levels．
D．Air and water pollution．
3．What has made the species on Earth die out at a higher rate
A．Natural causes．
B．Global warming．
C．Human activity．
D．No clean water．
4．Why do we need to change the way we live now
A．To avoid a sixth extinction．
B．To live with others in peace．
C．To save natural sources of energy．
D．To work better and travel faster．
1．How much do you know about extinction Share it with your classmates．
_____________________________________________________________________
_____________________________________________________________________
2．What should we do to avoid species extinction
_____________________________________________________________________
_____________________________________________________________________
1．hunt vi．& vt．猎取，猎杀；搜寻，搜索；追踪，追捕
①(教材p．110)Yes，many animals are illegally hunted for something they have． ____________
②Parent birds began to hunt for food for their young． ____________
③Police are hunting an escaped criminal． ____________
2．mass adj．大量的 n．群众；团；块；堆；大量；许多
①(教材p．52)These include the third mass extinction，known as the “Great Dying”，which killed 90% to 96% of all species． ____________
②The hill appeared as a black mass in the distance． ____________
③There's a mass of work for her to do． ____________
④His music is commercial．It is aimed at the masses． ____________
3．decrease n．减少；减少的量vi．& vt．减少
①(教材p．52)According to scientists，they include volcanic eruptions，asteroids hitting the Earth from space，changes in sea levels，the decrease of the oxygen content of the sea and global warming． ____________
②They decreased the size of the group from 25 to 15． ____________
③The decrease in sales was almost 20 percent． ____________
4．affect vt．影响；侵袭；使感染；(感情上)深深打动；使悲伤
①(教材p．53)It is clear that human activity has negatively affected all other species on Earth，including animals and plants． ____________
②They were deeply affected by the news of her death． ____________
③Arthritis is a crippling disease which affects people all over the world． ____________
1．(学会断句)Although it is not unusual/for species to die out naturally，the rate /at which this is now happening/is cause for concern．
[分析]本句是一个________。句中Although it is not unusual for species to die out naturally为________从句；主句中的at which this is now happening为限制性定语从句，修饰先行词________。
[翻译]_______________________________________________________________
_____________________________________________________________________
2．(学会断句)A 2015 study by scientists/who were based at Brown University and Duke University/in the US，looked at how quickly species die out/due to natural causes，that is，the “background extinction rate”．
[分析]本句是一个复合句。A 2015 study为句子的________，looked at为________，how quickly species die out due to natural causes是________从句；句中who were based at Brown University and Duke University in the US为限制性定语从句，修饰先行词________。
[翻译]_______________________________________________________________
_____________________________________________________________________
3．(学会断句)If a sixth mass extinction occurs，scientists/who have studied the issue/believe/that up to three quarters of all species on Earth/could die out．
[分析]本句是一个复合句。句中If a sixth mass extinction occurs 为________从句；who have studied the issue为限制性定语从句，修饰先行词________；that up to three quarters of all species on Earth could die out是________从句。
[翻译]_______________________________________________________________
_____________________________________________________________________
4．(学会断句)In short，if we want to survive，we need to stop destroying the planet/that we live on/and start to protect it．
[分析]本句是一个复合句。句中if we want to survive为________从句；that we live on为限制性定语从句，修饰先行词________；start to protect it和to stop destroying the planet是并列结构，作need的________。
[翻译]_______________________________________________________________
_____________________________________________________________________
1．(应用文佳句)The reasons for extinctions are varied．
灭绝的原因多种多样。
2．(应用文佳句)There is a long list of reasons why so many species are dying out：air and water pollution，forests being destroyed，factory farming and overfishing．
造成如此多的物种灭绝的原因有很多：空气和水污染、森林被破坏、工业化种植和过度捕捞。
3．(应用文佳句)Of course，as we humans depend on so many species for our survival，we would also be at risk of dying out．
当然，由于我们人类依靠如此多的物种生存，我们也将面临灭绝的风险。
4．(应用文佳句)In short，if we want to survive，we need to stop destroying the planet that we live on and start to protect it．
简而言之，如果我们想要生存，我们需要停止破坏我们赖以生存的星球，并开始保护它。
For example，we need to take steps to save endangered species，including setting up special areas where plants and animals can be protected．We need to change how we work and travel by using cleaner，more natural sources of energy，such as wind and solar energy．We also need to improve our farming methods to reduce water，air and land pollution．
1 / 5Period 2 课文整体阅读
1．What does the passage mainly talk about
A．The sixth extinction．
B．The extinctions in history．
C．The steps to avoid extinction．
D．The reason for extinction．
2．What's the main idea of paragraph 2
A．Species die out naturally．
B．How quickly species die out．
C．Why so many species are dying out．
D．What effect human activity has on species．
[答案] 1—2 AD
Read the text carefully and then choose the best answer．
1．When did dinosaurs die out according to the passage
A．More than 500 million years ago．
B．More than 66 million years ago．
C．In the third mass extinction．
D．In the fourth mass extinction．
2．Which of the following is one of unnatural reasons for extinctions
A．Volcanic eruptions．
B．Asteroids hitting the Earth．
C．Changes in sea levels．
D．Air and water pollution．
3．What has made the species on Earth die out at a higher rate
A．Natural causes． B．Global warming．
C．Human activity． D．No clean water．
4．Why do we need to change the way we live now
A．To avoid a sixth extinction．
B．To live with others in peace．
C．To save natural sources of energy．
D．To work better and travel faster．
[答案] 1—4 BDCA
1．How much do you know about extinction Share it with your classmates．
2．What should we do to avoid species extinction
[答案] 略
1．hunt vi．& vt．猎取，猎杀；搜寻，搜索；追踪，追捕
①(教材p．110)Yes，many animals are illegally hunted for something they have． vt．猎杀
②Parent birds began to hunt for food for their young． vi．搜寻，搜索
③Police are hunting an escaped criminal． vt．追踪，追捕
2．mass adj．大量的 n．群众；团；块；堆；大量；许多
①(教材p．52)These include the third mass extinction，known as the “Great Dying”，which killed 90% to 96% of all species． adj．大量的
②The hill appeared as a black mass in the distance． n．块；堆
③There's a mass of work for her to do． n．大量；许多
④His music is commercial．It is aimed at the masses． n．群众
3．decrease n．减少；减少的量vi．& vt．减少
①(教材p．52)According to scientists，they include volcanic eruptions，asteroids hitting the Earth from space，changes in sea levels，the decrease of the oxygen content of the sea and global warming． n．减少的量
②They decreased the size of the group from 25 to 15． vt．减少
③The decrease in sales was almost 20 percent． n．减少的量
4．affect vt．影响；侵袭；使感染；(感情上)深深打动；使悲伤
①(教材p．53)It is clear that human activity has negatively affected all other species on Earth，including animals and plants． 影响
②They were deeply affected by the news of her death． 深深打动；使悲伤
③Arthritis is a crippling disease which affects people all over the world． 使感染
1．(学会断句)Although it is not unusual/for species to die out naturally，the rate /at which this is now happening/is cause for concern．
[分析]本句是一个复合句。句中Although it is not unusual for species to die out naturally为让步状语从句；主句中的at which this is now happening为限制性定语从句，修饰先行词the rate。
[翻译]虽然物种的自然灭绝并不罕见，但现在灭绝的速度让人担忧。
2．(学会断句)A 2015 study by scientists/who were based at Brown University and Duke University/in the US，looked at how quickly species die out/due to natural causes，that is，the “background extinction rate”．
[分析]本句是一个复合句。A 2015 study为句子的主语，looked at为谓语，how quickly species die out due to natural causes是宾语从句；句中who were based at Brown University and Duke University in the US为限制性定语从句，修饰先行词scientists。
[翻译]美国布朗大学和杜克大学的科学家们于2015年进行了一项研究，考察了自然原因导致物种灭绝的速度，即“背景灭绝率”。
3．(学会断句)If a sixth mass extinction occurs，scientists/who have studied the issue/believe/that up to three quarters of all species on Earth/could die out．
[分析]本句是一个复合句。句中If a sixth mass extinction occurs 为条件状语从句；who have studied the issue为限制性定语从句，修饰先行词scientists；that up to three quarters of all species on Earth could die out是宾语从句。
[翻译]研究这个问题的科学家们认为，如果第六次大灭绝发生，地球上多达四分之三的物种可能就会灭绝。
4．(学会断句)In short，if we want to survive，we need to stop destroying the planet/that we live on/and start to protect it．
[分析]本句是一个复合句。句中if we want to survive为条件状语从句；that we live on为限制性定语从句，修饰先行词the planet；start to protect it和to stop destroying the planet是并列结构，作need的宾语。
[翻译]简而言之，如果我们想要生存，我们需要停止破坏我们赖以生存的星球，并开始保护它。
1．(应用文佳句)The reasons for extinctions are varied．
灭绝的原因多种多样。
2．(应用文佳句)There is a long list of reasons why so many species are dying out：air and water pollution，forests being destroyed，factory farming and overfishing．
造成如此多的物种灭绝的原因有很多：空气和水污染、森林被破坏、工业化种植和过度捕捞。
3．(应用文佳句)Of course，as we humans depend on so many species for our survival，we would also be at risk of dying out．
当然，由于我们人类依靠如此多的物种生存，我们也将面临灭绝的风险。
4．(应用文佳句)In short，if we want to survive，we need to stop destroying the planet that we live on and start to protect it．
简而言之，如果我们想要生存，我们需要停止破坏我们赖以生存的星球，并开始保护它。
For example，we need to take steps to save endangered species，including setting up special areas where plants and animals can be protected．We need to change how we work and travel by using cleaner，more natural sources of energy，such as wind and solar energy．We also need to improve our farming methods to reduce water，air and land pollution．
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