【譯林湖南版】2011高考英語(yǔ)一輪復(fù)習(xí)提能訓(xùn)練

　　Module 5

　　Unit 3　Science versus nature

　　Ⅰ.完形填空

　　A

　　The old man walked slowly into the restaurant.Unforgettable were his eyes shining like diamonds，and thin lips held in a steady __1__.He stopped，and winked(使眼色)at a little girl sitting by the door.Mary，a waitress，smiled back at him and watched him walk __2__ toward a table by the window.

　　Mary stood and ran over to him，saying，“Here，Sir.Let me give you a __3__.”

　　Saying no word，he smiled and __4__ a thank-you.She pulled the chair away from the table.__5__ him with one arm，she helped him get comfortably seated.Then she leaned his cane(手杖)against the table where he could __6__ it.

　　In a soft voice he said，“Thank you，Miss.__7__ you for your kindness.”

　　“You’re welcome，Sir.”she replied.“My name is Mary.If you need anything，just wave at me！”

　　After he’d finished a hearty meal，Mary brought him the change from his ticket.She helped him up from his __8__，handed him his cane，and walked with him to the front door，saying，“Come back and see us，Sir！”

　　When Mary went to clean his table，she almost __9__.Under his plate she found a note written on a napkin (餐巾紙)．Under the napkin was a 100-dollar bill.

　　The note on the napkin read，“Dear Mary，I respect you，and you respect yourself，too.It shows the __10__you treat others.You’ve found the secret of __11__.Your kindness will bring pleasure to those who meet you like me.”

　　The man she had __12__ was the owner of the restaurant where she worked.This was the first time that she had ever seen him in person.

　　1．A.laughter

　　B．smile

　　C．cry

　　D．sneer

　　2．A.easily

　　B．quickly

　　C．slowly

　　D．calmly

　　3．A.lift

　　B．hand

　　C．seat

　　D．place

　　4．A.nodded

　　B．said

　　C．refused

　　D．received

　　5．A.Fixing

　　B．Shaking

　　C．Steadying

　　D．Pulling

　　6．A.feel

　　B．hold

　　C．watch

　　D．reach

　　7．A.Congratulate

　　B．Trust

　　C．Bless

　　D．Admire

　　8．A.table

　　B．floor

　　C．door

　　D．chair

　　9．A.cried

　　B．laughed

　　C．fainted

　　D．despaired

　　10．A.means

　　B．way

　　C．method

　　D．manner

　　11．A.passion

　　B．gratitude

　　C．a(chǎn)ttitude

　　D．happiness

　　12．A.depended on

　　B．worked on

　　C．waited on

　　D．took on

　　B

　　In Jane Austen’s time，unmarried girls were always closely guarded，and hardly allowed to be alone with a young man，and during the Victorian period exposure of the body in particular was thought to be most immoral.Victorian ladies wore dresses __13__ down to their feet，long in the sleeve and high at the neck.Since then，ways of dressing as well as times have changed.Girls are no longer closely guarded，and they can do more or less __14__ they like.And yet despite all these astonishing changes，__15__thing has remained much the same for most people，__16__ that is the shame of becoming a mother before being married.If this does happen，there often comes a quick marriage with __17__ man responsible.If this is possible，the affair may bring considerable shame to the girl’s parents as well as to __18__.

　　It is now quite normal for a girl，once __19__the age about fifteen，to go out with a boyfriend，and although her parents will probably insist that she come home at a certain time，beyond this they depend on her to look after herself.Kisses __20__ young men and women are now considered to be perfectly normal.Although times have changed so much，most people still believe that a woman should not become a mother before being married.

　　Ⅱ.閱讀理解

　　Cat has bright future

　　By day he is just a normal cat but when the lights go out，he glows in the dark.

　　Scientists have genetically modified a cat as part of an experiment that could lead to treatments for diseases.

　　Named Mr.Green Genes，he looks like a six-month-old cat but，under ultraviolet (紫外線(xiàn)的)light，his eyes，gums(牙齦)and tongue glow green.That is the result of a genetic experiment at the Audubon Center for Research of Endangered Species in New Orleans，US.

　　Mr.Green Genes is the first fluorescent (熒光的)cat in the US and probably the world，said Betsy Dresser，the center’s director.

　　The researchers made him so they could learn whether a gene could be introduced harmlessly into a cat’s genetic sequence.

　　If so，it would be the first step in a process that could lead to the development of ways to treat diseases via gene therapy.

　　The gene，which was added to Mr.Green Genes’DNA，has no effect on his health，Ms.Dresser said.

　　Cats are ideal for this project because their genetic makeup is similar to that of humans，said Dr.Martha Gomez，a scientist at the center.

　　To show that the gene went where it was supposed to go，the researchers settled on one that would glow.

　　The gene“is just a marker”，said Leslie Lyons，an assistant professor at the University of California，Davis.Lyons is familiar with the center’s work.

　　“The glowing part is the fun part，”she said.

　　Glowing creatures made international news earlier this month when the Nobel Prize in Chemistry was awarded to three scientists who had discovered the gene through their work with jellyfish(水母)．

　　1．Which of the following might be the best title for the passage?

　　A．A Glowing Cat

　　B．Mr.Green Genes

　　C．One Cat’s Life

　　D．An experiment on cats

　　2．What can we conclude from the passage?

　　A．Fortunately，scientists have found ways to treat diseases via gene therapy.

　　B．Scientists think cats’ genetic makeup is the same as that of human beings.

　　C．Three scientists who had discovered the gene were given Nobel Prize in Physics.

　　D．Scientists have managed to introduce a gene into a cat’s genetic sequence.

　　3．What does “settled on” most probably mean in Paragraph 9?

　　A．chosen

　　B．killed

　　C．took

　　D．raised4．From the passage we can see that ________.

　　A．Mr.Green Genes was made by researchers to treat diseases

　　B．the cat named Mr.Green Genes can glow when it is dark

　　C．Mr.Green Genes is the first fluorescent cat in the world

　　D．Mr.Green Genes is a cat of seven months old up to now

　　5．Which of the following is WRONG according to the text?

　　A．The gene added to Mr.Green Genes’ DNA doesn’t affect its health at all.

　　B．The scientists came up with the idea of the glowing genes totally for fun.

　　C．Earlier this month glowing creatures became news all through the world.

　　D．Scientists had discovered the gene from the jellyfish they worked with.Unit 3　Science versus nature

　　Ⅰ.

　　【語(yǔ)篇導(dǎo)讀】 飯店侍者瑪麗熱情接待了一位長(zhǎng)者，誰(shuí)料到如此湊巧，這位長(zhǎng)者竟然是該飯店的老板。那么故事最后的結(jié)局是怎樣的呢？

　　1．解析：由下文的 “Mary，a waitress，smiled back at him” 可判斷，老人是嘴唇上掛著微笑，故選B項(xiàng)。A項(xiàng)意為 “笑聲”；C項(xiàng)意為 “大哭”；D項(xiàng)意為 “冷笑”，均不符合語(yǔ)境。

　　答案：B

　　2．解析：由上文 “The old man walked slowly into the restaurant.” 和下文 “__5__ him with one arm，she helped him get comfortably seated” 可判斷，老人行走不便，走路緩慢，故該空選C項(xiàng)。D項(xiàng)意為 “沉著地，冷靜地”，是描述人的心態(tài)，由文中看不出老人的心事，故排除。

　　答案：C

　　3．解析：由下段可知，女孩此時(shí)是主動(dòng)上來(lái)幫忙，give sb.a hand意為 “給某人幫忙”，故選B項(xiàng)。give sb.a lift意為 “給某人搭便車(chē)”；give sb.a seat/place意為 “給某人座位/地方”，均不符合語(yǔ)境。

　　答案：B

　　4．解析：女孩幫忙，老人致謝，由此排除C、D兩項(xiàng)；再根據(jù) “Saying no word” 可知，老人的感謝并非口頭說(shuō)出來(lái)的，而是點(diǎn)頭致謝的，由此判斷選A項(xiàng)。

　　答案：A

　　5．解析：由全文第一句和下文 “She helped him get comfortably seated” 可知，老人可謂是老態(tài)龍鐘得坐立不穩(wěn)，由此判斷，此處表女孩用手臂扶穩(wěn)他，故選C項(xiàng)。其他選項(xiàng)不符合語(yǔ)境。

　　答案：C

　　6．解析：根據(jù)常識(shí)，既然是為了幫忙，細(xì)心的女孩應(yīng)該是將老人的手杖放在老人伸手夠得著的地方，而不是看得見(jiàn)，感覺(jué)得到的地方，由此排除A、C兩項(xiàng)；B項(xiàng)意為 “握住”，不符合語(yǔ)境。

　　答案：D

　　7．解析：由下文女孩所說(shuō)的話(huà) “You’re welcome，Sir.” 可知，老人此處應(yīng)該是在感謝女孩的同時(shí)，說(shuō)祝福性的話(huà)，即：善良的女孩，愿上帝保佑你！故選C項(xiàng)，其他選項(xiàng)不符合語(yǔ)境。

　　答案：C

　　8．解析：由 “She helped him up” 她幫他站起來(lái)，且從上文可知，老人原先是坐在椅子上的，故也是從椅子上站起來(lái)，故選D項(xiàng)。

　　答案：D

　　9．解析：由語(yǔ)境可知，女孩此時(shí)并不知道老人是飯店老板，而認(rèn)為他是一個(gè)需要幫助的老人，清理衛(wèi)生時(shí)看到老人留下的錢(qián)，她自然是 “懵了”，C項(xiàng)意為 “昏，暈”，符合語(yǔ)境。其他選項(xiàng)不符合語(yǔ)境。

　　答案：C

　　10．解析：由省略了關(guān)系詞的定語(yǔ)從句 “you treat others” 可判斷答案選B項(xiàng)，即：你對(duì)待他人的方式。

　　答案：B

　　11．解析：由下文 “Your kindness will bring pleasure to those” (你的善良將給那些人帶來(lái)快樂(lè)！)可知，此處老人的意思是： “你知道了幸福的秘密，所以你懂得了如何讓人快樂(lè)”，故選D項(xiàng)。其他選項(xiàng)不符合語(yǔ)境。

　　答案：D

　　12．解析：上文女孩幫老人的忙，也可謂是服侍、招待老人，C項(xiàng)意為 “服侍，招待” 故選C項(xiàng)。A項(xiàng)意為 “依靠”；B項(xiàng)意為 “從事”；D項(xiàng)意為 “呈現(xiàn)，雇用”，均不符合語(yǔ)境。

　　答案：C

　　13．解析：維多利亞女王時(shí)代的婦女穿著拖到腳踝的服裝。reach to意為 “延伸到，達(dá)到”。

　　答案：reaching

　　14．解析：該空引導(dǎo)賓語(yǔ)從句且在從句中作like的賓語(yǔ)，從句作do的賓語(yǔ)，句意為 “他們或多或少可以做他們喜歡做的事。”

　　答案：what

　　15．解析：盡管發(fā)生了這些奇怪的變化，但對(duì)大多數(shù)人來(lái)說(shuō)，有一件事情還是一樣的。

　　答案：one

　　16．解析：此處用and并列兩個(gè)簡(jiǎn)單句。

　　答案：and

　　17．解析：特指和女孩結(jié)婚的那位負(fù)責(zé)的男人，故填the。

　　答案：the

　　18．解析：給女孩父母和女孩本人帶來(lái)恥辱。

　　答案：herself

　　19．解析：過(guò)了十五歲的年齡后。

　　答案：past/over/above

　　20．解析：年輕男女之間的接吻。

　　答案：between

　　Ⅱ.

　　【解題導(dǎo)語(yǔ)】 本文是一篇科普實(shí)驗(yàn)報(bào)告。科學(xué)家對(duì)貓進(jìn)行了基因?qū)嶒?yàn)，使其眼睛、牙齦和舌頭發(fā)綠光，以此進(jìn)行利用基因治療疾病的實(shí)驗(yàn)。

　　1．解析：標(biāo)題、主旨題。本文主要講述了科學(xué)家給一只貓的身體引入了新的基因，使其會(huì)在沒(méi)有燈光的時(shí)候可以發(fā)光。使用A選項(xiàng)不但反映了文章的中心思想，而且能引起讀者的興趣。

　　答案：A

　　2．解析：細(xì)節(jié)理解題。根據(jù)文章第五、七段可知答案。

　　答案：D

　　3．解析：詞義理解題。根據(jù)文章倒數(shù)第四段可得知答案：為了弄清基因到了它該去的地方，研究者們選擇了一種會(huì)發(fā)光的基因。

　　答案：A

　　4．解析：細(xì)節(jié)理解題。根據(jù)文章第一段可得知答案。

　　答案：B

　　5．解析：細(xì)節(jié)理解題。根據(jù)文章倒數(shù)第二、三、四段可得知答案。

　　答案：B

　　【譯林湖南版】2011高考英語(yǔ)一輪復(fù)習(xí)提能訓(xùn)練

　　Module 5

　　Unit 3　Science versus nature

　　Ⅰ.完形填空

　　A

　　The old man walked slowly into the restaurant.Unforgettable were his eyes shining like diamonds，and thin lips held in a steady __1__.He stopped，and winked(使眼色)at a little girl sitting by the door.Mary，a waitress，smiled back at him and watched him walk __2__ toward a table by the window.

　　Mary stood and ran over to him，saying，“Here，Sir.Let me give you a __3__.”

　　Saying no word，he smiled and __4__ a thank-you.She pulled the chair away from the table.__5__ him with one arm，she helped him get comfortably seated.Then she leaned his cane(手杖)against the table where he could __6__ it.

　　In a soft voice he said，“Thank you，Miss.__7__ you for your kindness.”

　　“You’re welcome，Sir.”she replied.“My name is Mary.If you need anything，just wave at me！”

　　After he’d finished a hearty meal，Mary brought him the change from his ticket.She helped him up from his __8__，handed him his cane，and walked with him to the front door，saying，“Come back and see us，Sir！”

　　When Mary went to clean his table，she almost __9__.Under his plate she found a note written on a napkin (餐巾紙)．Under the napkin was a 100-dollar bill.

　　The note on the napkin read，“Dear Mary，I respect you，and you respect yourself，too.It shows the __10__you treat others.You’ve found the secret of __11__.Your kindness will bring pleasure to those who meet you like me.”

　　The man she had __12__ was the owner of the restaurant where she worked.This was the first time that she had ever seen him in person.

　　1．A.laughter

　　B．smile

　　C．cry

　　D．sneer

　　2．A.easily

　　B．quickly

　　C．slowly

　　D．calmly

　　3．A.lift

　　B．hand

　　C．seat

　　D．place

　　4．A.nodded

　　B．said

　　C．refused

　　D．received

　　5．A.Fixing

　　B．Shaking

　　C．Steadying

　　D．Pulling

　　6．A.feel

　　B．hold

　　C．watch

　　D．reach

　　7．A.Congratulate

　　B．Trust

　　C．Bless

　　D．Admire

　　8．A.table

　　B．floor

　　C．door

　　D．chair

　　9．A.cried

　　B．laughed

　　C．fainted

　　D．despaired

　　10．A.means

　　B．way

　　C．method

　　D．manner

　　11．A.passion

　　B．gratitude

　　C．a(chǎn)ttitude

　　D．happiness

　　12．A.depended on

　　B．worked on

　　C．waited on

　　D．took on

　　B

　　In Jane Austen’s time，unmarried girls were always closely guarded，and hardly allowed to be alone with a young man，and during the Victorian period exposure of the body in particular was thought to be most immoral.Victorian ladies wore dresses __13__ down to their feet，long in the sleeve and high at the neck.Since then，ways of dressing as well as times have changed.Girls are no longer closely guarded，and they can do more or less __14__ they like.And yet despite all these astonishing changes，__15__thing has remained much the same for most people，__16__ that is the shame of becoming a mother before being married.If this does happen，there often comes a quick marriage with __17__ man responsible.If this is possible，the affair may bring considerable shame to the girl’s parents as well as to __18__.

　　It is now quite normal for a girl，once __19__the age about fifteen，to go out with a boyfriend，and although her parents will probably insist that she come home at a certain time，beyond this they depend on her to look after herself.Kisses __20__ young men and women are now considered to be perfectly normal.Although times have changed so much，most people still believe that a woman should not become a mother before being married.

　　Ⅱ.閱讀理解

　　Cat has bright future

　　By day he is just a normal cat but when the lights go out，he glows in the dark.

　　Scientists have genetically modified a cat as part of an experiment that could lead to treatments for diseases.

　　Named Mr.Green Genes，he looks like a six-month-old cat but，under ultraviolet (紫外線(xiàn)的)light，his eyes，gums(牙齦)and tongue glow green.That is the result of a genetic experiment at the Audubon Center for Research of Endangered Species in New Orleans，US.

　　Mr.Green Genes is the first fluorescent (熒光的)cat in the US and probably the world，said Betsy Dresser，the center’s director.

　　The researchers made him so they could learn whether a gene could be introduced harmlessly into a cat’s genetic sequence.

　　If so，it would be the first step in a process that could lead to the development of ways to treat diseases via gene therapy.

　　The gene，which was added to Mr.Green Genes’DNA，has no effect on his health，Ms.Dresser said.

　　Cats are ideal for this project because their genetic makeup is similar to that of humans，said Dr.Martha Gomez，a scientist at the center.

　　To show that the gene went where it was supposed to go，the researchers settled on one that would glow.

　　The gene“is just a marker”，said Leslie Lyons，an assistant professor at the University of California，Davis.Lyons is familiar with the center’s work.

　　“The glowing part is the fun part，”she said.

　　Glowing creatures made international news earlier this month when the Nobel Prize in Chemistry was awarded to three scientists who had discovered the gene through their work with jellyfish(水母)．

　　1．Which of the following might be the best title for the passage?

　　A．A Glowing Cat

　　B．Mr.Green Genes

　　C．One Cat’s Life

　　D．An experiment on cats

　　2．What can we conclude from the passage?

　　A．Fortunately，scientists have found ways to treat diseases via gene therapy.

　　B．Scientists think cats’ genetic makeup is the same as that of human beings.

　　C．Three scientists who had discovered the gene were given Nobel Prize in Physics.

　　D．Scientists have managed to introduce a gene into a cat’s genetic sequence.

　　3．What does “settled on” most probably mean in Paragraph 9?

　　A．chosen

　　B．killed

　　C．took

　　D．raised4．From the passage we can see that ________.

　　A．Mr.Green Genes was made by researchers to treat diseases

　　B．the cat named Mr.Green Genes can glow when it is dark

　　C．Mr.Green Genes is the first fluorescent cat in the world

　　D．Mr.Green Genes is a cat of seven months old up to now

　　5．Which of the following is WRONG according to the text?

　　A．The gene added to Mr.Green Genes’ DNA doesn’t affect its health at all.

　　B．The scientists came up with the idea of the glowing genes totally for fun.

　　C．Earlier this month glowing creatures became news all through the world.

　　D．Scientists had discovered the gene from the jellyfish they worked with.Unit 3　Science versus nature

　　Ⅰ.

　　【語(yǔ)篇導(dǎo)讀】 飯店侍者瑪麗熱情接待了一位長(zhǎng)者，誰(shuí)料到如此湊巧，這位長(zhǎng)者竟然是該飯店的老板。那么故事最后的結(jié)局是怎樣的呢？

　　1．解析：由下文的 “Mary，a waitress，smiled back at him” 可判斷，老人是嘴唇上掛著微笑，故選B項(xiàng)。A項(xiàng)意為 “笑聲”；C項(xiàng)意為 “大哭”；D項(xiàng)意為 “冷笑”，均不符合語(yǔ)境。

　　答案：B

　　2．解析：由上文 “The old man walked slowly into the restaurant.” 和下文 “__5__ him with one arm，she helped him get comfortably seated” 可判斷，老人行走不便，走路緩慢，故該空選C項(xiàng)。D項(xiàng)意為 “沉著地，冷靜地”，是描述人的心態(tài)，由文中看不出老人的心事，故排除。

　　答案：C

　　3．解析：由下段可知，女孩此時(shí)是主動(dòng)上來(lái)幫忙，give sb.a hand意為 “給某人幫忙”，故選B項(xiàng)。give sb.a lift意為 “給某人搭便車(chē)”；give sb.a seat/place意為 “給某人座位/地方”，均不符合語(yǔ)境。

　　答案：B

　　4．解析：女孩幫忙，老人致謝，由此排除C、D兩項(xiàng)；再根據(jù) “Saying no word” 可知，老人的感謝并非口頭說(shuō)出來(lái)的，而是點(diǎn)頭致謝的，由此判斷選A項(xiàng)。

　　答案：A

　　5．解析：由全文第一句和下文 “She helped him get comfortably seated” 可知，老人可謂是老態(tài)龍鐘得坐立不穩(wěn)，由此判斷，此處表女孩用手臂扶穩(wěn)他，故選C項(xiàng)。其他選項(xiàng)不符合語(yǔ)境。

　　答案：C

　　6．解析：根據(jù)常識(shí)，既然是為了幫忙，細(xì)心的女孩應(yīng)該是將老人的手杖放在老人伸手夠得著的地方，而不是看得見(jiàn)，感覺(jué)得到的地方，由此排除A、C兩項(xiàng)；B項(xiàng)意為 “握住”，不符合語(yǔ)境。

　　答案：D

　　7．解析：由下文女孩所說(shuō)的話(huà) “You’re welcome，Sir.” 可知，老人此處應(yīng)該是在感謝女孩的同時(shí)，說(shuō)祝福性的話(huà)，即：善良的女孩，愿上帝保佑你！故選C項(xiàng)，其他選項(xiàng)不符合語(yǔ)境。

　　答案：C

　　8．解析：由 “She helped him up” 她幫他站起來(lái)，且從上文可知，老人原先是坐在椅子上的，故也是從椅子上站起來(lái)，故選D項(xiàng)。

　　答案：D

　　9．解析：由語(yǔ)境可知，女孩此時(shí)并不知道老人是飯店老板，而認(rèn)為他是一個(gè)需要幫助的老人，清理衛(wèi)生時(shí)看到老人留下的錢(qián)，她自然是 “懵了”，C項(xiàng)意為 “昏，暈”，符合語(yǔ)境。其他選項(xiàng)不符合語(yǔ)境。

　　答案：C

　　10．解析：由省略了關(guān)系詞的定語(yǔ)從句 “you treat others” 可判斷答案選B項(xiàng)，即：你對(duì)待他人的方式。

　　答案：B

　　11．解析：由下文 “Your kindness will bring pleasure to those” (你的善良將給那些人帶來(lái)快樂(lè)！)可知，此處老人的意思是： “你知道了幸福的秘密，所以你懂得了如何讓人快樂(lè)”，故選D項(xiàng)。其他選項(xiàng)不符合語(yǔ)境。

　　答案：D

　　12．解析：上文女孩幫老人的忙，也可謂是服侍、招待老人，C項(xiàng)意為 “服侍，招待” 故選C項(xiàng)。A項(xiàng)意為 “依靠”；B項(xiàng)意為 “從事”；D項(xiàng)意為 “呈現(xiàn)，雇用”，均不符合語(yǔ)境。

　　答案：C

　　13．解析：維多利亞女王時(shí)代的婦女穿著拖到腳踝的服裝。reach to意為 “延伸到，達(dá)到”。

　　答案：reaching

　　14．解析：該空引導(dǎo)賓語(yǔ)從句且在從句中作like的賓語(yǔ)，從句作do的賓語(yǔ)，句意為 “他們或多或少可以做他們喜歡做的事。”

　　答案：what

　　15．解析：盡管發(fā)生了這些奇怪的變化，但對(duì)大多數(shù)人來(lái)說(shuō)，有一件事情還是一樣的。

　　答案：one

　　16．解析：此處用and并列兩個(gè)簡(jiǎn)單句。

　　答案：and

　　17．解析：特指和女孩結(jié)婚的那位負(fù)責(zé)的男人，故填the。

　　答案：the

　　18．解析：給女孩父母和女孩本人帶來(lái)恥辱。

　　答案：herself

　　19．解析：過(guò)了十五歲的年齡后。

　　答案：past/over/above

　　20．解析：年輕男女之間的接吻。

　　答案：between

　　Ⅱ.

　　【解題導(dǎo)語(yǔ)】 本文是一篇科普實(shí)驗(yàn)報(bào)告。科學(xué)家對(duì)貓進(jìn)行了基因?qū)嶒?yàn)，使其眼睛、牙齦和舌頭發(fā)綠光，以此進(jìn)行利用基因治療疾病的實(shí)驗(yàn)。

　　1．解析：標(biāo)題、主旨題。本文主要講述了科學(xué)家給一只貓的身體引入了新的基因，使其會(huì)在沒(méi)有燈光的時(shí)候可以發(fā)光。使用A選項(xiàng)不但反映了文章的中心思想，而且能引起讀者的興趣。

　　答案：A

　　2．解析：細(xì)節(jié)理解題。根據(jù)文章第五、七段可知答案。

　　答案：D

　　3．解析：詞義理解題。根據(jù)文章倒數(shù)第四段可得知答案：為了弄清基因到了它該去的地方，研究者們選擇了一種會(huì)發(fā)光的基因。

　　答案：A

　　4．解析：細(xì)節(jié)理解題。根據(jù)文章第一段可得知答案。

　　答案：B

　　5．解析：細(xì)節(jié)理解題。根據(jù)文章倒數(shù)第二、三、四段可得知答案。

　　答案：B