For many years, scientists couldn't figure out how atoms and molecules on the Earth combined to make living things. Plants, fish, dinosaurs, and people are made of atoms and molecules, but they are put together in a more complicated way than the molecules in the primitive ocean. What's more, living things have energy and can reproduce, while the chemicals on the Earth 4 billion years ago were lifeless.
　　After years of study, scientists figured out that living things, including human bodies, are basically made of amino acids and nucleotide bases. These are molecules with millions of hydrogen, carbon, nitrogen, and oxygen atoms. How could such complicated molecules have been formed in the primitive soup? Scientists were stumped.
　　Then, in 1953, two scientists named Harold Urey and Stanley L. Miller did a very simple experiment to find out what had happened on the Primitive Earth. They set up some tubes and bottles in a closed loop, and put in some of the same gases that were present in the atmosphere 4 billion years ago: water vapor, ammonia, carbon dioxide, methane, and hydrogen.
　　Then they shot an electric spark through the gases to simulate bolts of lightning on the ancient Earth, circulated the gases through some water, sent them back for more sparks, and so on. After seven days, the water that the gases had been bubbling through had turned brown. Some new chemicals were dissolved in it. When Miller and Urey analyzed the liquid, they found that it contained amino acids-the very kind of molecules found in all living things.
61. When did scientists come to realize how the atoms and molecules on the Earth combined to make living thing?
　　A. 4 billion years ago. B.1953.　C. After seven days.D. Many years later.
62. Scientists figured out that human bodies are basically made of .
A.amino acids
B.molecules
C. hydrogen, carbon, nitrogen and oxygen atoms
D. water vapor, ammonia, carbon dioxide, methane and hydrogen
63. Harold Urey and Stanley L.Miller did their experiment in order to .　
A. find out what had happened on the Earth 4 billion years ago
　　 B.simulate bolts of lightning on the ancient Earth
　　 C. dissolve some new chemicals
　　D.analyze a liquid
64. At the end of the last paragraph, the underlined word "it" refers to .
A. a closed loop   B. an electric spark   C.water   D. the liquid
65. According to the writer, living things on the Earth include .
　A. atoms and molecules                     B.chemicals　
C. plants, fish, dinosaurs and human beings     D.the primitive soup
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：完形填空


第二節(jié)：完形填空（共20小題；每小題1.5分，滿分30分）
閱讀下面短文，掌握其大意，然后從各題所給的四個(gè)選項(xiàng)（A、B、C、D）中，選出最佳選項(xiàng)。
Home, sweet home
It was December 22. The cold wind swept the countless snowflakes(雪花） across my front yard. My dad was there sweeping the  36  . His nose was __37___as a cherry. With every breath he took, a white puff(水氣) ran into the air.
Inside, my mother was  38  the last of the boxes. As I entered the front door, the  39  that after today I wouldn’t enter through that door ever again  40  a hole in my stomach. I picked up my dog and sat Indian style with him in my arms on the  41  , wooden floor. I had no  42  but to sit on the floor, for there was no longer any furniture existing in my house. I sat there in a daze（恍惚）, just  43  . There was no reason for my parents to make me, a once  44  12-year-old kid,  45  . I had two best friends right across the street; I did well in school and I always kept my room clean.  46  , this was “my house”. By no means did I want a couple of  47  living here. These recurring（重復(fù)）thoughts  48  around in my mind and I couldn’t find an answer.
Out of the front window I could see the orange top of a truck pulling in the cleaned driveway and I knew it was the other U-Haul. Instantly three men came  49  in the back door like World War III was starting.
I watched  50  as the men, my mother and my dad carried our belongings to the truck. My dog even winced（畏縮）as he stared out of the window. I wondered if he was  51  , too, or if he just wished to play outside in the snow.
My mum came in, looking solemn（凝重）. She turned   52  the overhead light, put the  53  in my arm and took me out of the back door. A totally  54  feeling filled my heart. For the first time in my life ,I wondered what  55  would be to me tomorrow.
36. A. stairs       B. garden          C. sidewalk     D. driveway
37. A. red              B. black     C. white     D. blown
38. A. piling      B. packing      C. collecting   D. locking
39. A. wish        B. dream     C. thought      D. worry
40. A. cut              B. burned          C. shot       D. made
41. A. cold        B. wet        C. broken          D . messy
42. A. choice     B. way       C. solution      D. means
43. A. dreaming     B. thinking     C. staring          D. crying
44. A. hardworking       B. clever     C. happy     D. honest
45. A. remain     B. cry        C. suffer     D. move
46. A. However      B. Besides      C. Therefore   D. Yet
47. A. neighbours   B. strangers    C. visitors       D. elders
48. A. occurred      B. traveled      C. danced          D. flowed
49. A. running          B. laughing     C. talking          D. wispering
50. A. curiously     B. strangely    C. carefully    D. helplessly
51. A. afraid      B. angry     C. sad        D. lonely
52. A. down      B. off         C. on         D. up
53. A. box         B. dog        C. bag        D. hand
54. A. excited     B. eager     C. empty     D. angry
55. A. place       B. school    C. home    D. world

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

完型填空（共20小題；每小題1.5分，滿分30分）
閱讀下面短文，掌握其大意，然后從36—55各題所給的四個(gè)選項(xiàng)（A、B、C和D）中，選出最佳選項(xiàng)，并在答題卡上將該項(xiàng)涂黑。
For much of our life, my mother and I hated each other. I spent most of my childhood   36   with her – or trying to avoid her, as well as her bitterness, unhappiness and endless smoking. I learned how to defend myself with   37   designed to hurt her. In turn, she vowed I would have a    38   who would feel the way about me that I felt about her.
Many years later when my husband and I decided to have a child, I was   39   to have a girl. I couldn’t   40   the though of a daughter who might not love me – or who would want to   41   me. As soon as I became pregnant, I was convinced I was having a boy. In the delivery room, on my doctor putting my baby into my arms, I couldn’t wait to tell my mother I had a   42  , while “he” was a girl. At that moment, I couldn’t imagine wanting anyone but her.
43  I couldn’t forget my mother’s teasing vow, even after she died and I saw her in a more   44   light. As my daughter got older, whenever we argued, I worried we were   45   the same awful path that my mother and I had gone down.
Last summer, my daughter   46   18, the same age when my mother threw me out of her apartment for   47  . However, I was with her, planning for her first year at college. When my husband and I dropped her off at her school in New York, I finally   48   to her my biggest fear that we would end up like me and my mother. “That will never happen.” she   49  me, kissing me goodbye. Six weeks later, my husband and I returned to the campus. I   50   myself arguing with my daughter about her messy room, not  using the library and her mistake of choosing the room near the bathroom. I couldn’t stop myself. And then   51   came: “You’re just like your mother,” my daughter screamed. “I hate you.” And then she   52  .
I finally heard the words I had always dreaded. But maybe that was because I   53   them. I had always worried the bond I shared with my daughter would   54  . later that evening, we picked my daughter up to a restaurant. We ate   55  . But when we separated, I hugged her. The next morning, she called telling she loved me. There wasn’t anything to be afraid of anymore. There was just a relationship we should work on with each other.
36．A．sharing       B．playing       C．communicating D．fighting
37．A．a(chǎn)ctions       B．a(chǎn)ctivities    C．words         D．weapons
38．A．husband     B．friend          C．child   D．daughter
39．A．a(chǎn)fraid          B．unlucky       C．uncertain   D．willing
40．A．have  B．bear   C．hold   D．a(chǎn)fford
41．A．love    B．escape from       C．obey  D．keep from
42．A．daughter   B．son     C．baby  D．life
43．A．Furthermore      B．But     C．And    D．Or
44．A．bright         B．a(chǎn)nnoying    C．understanding   D．unfriendly
45．A．on       B．in        C．a(chǎn)t       D．a(chǎn)long
46．A．  became    B．grew  C．went  D．turned
47．A．good  B．nothing      C．my good     D．a(chǎn)ll
48．A．presented B．told    C．a(chǎn)dmitted   D．informed
49．A．promised   B．pardoned   C．referred     D．reflected
50．A．wanted      B．a(chǎn)sked          C．forced         D．found
51．A．it         B．she     C．they   D．that
52．A．walked away      B．looked away       C．gave away D．stormed away
53．A．deserved   B．demanded C．equaled      D．a(chǎn)ppreciated
54．A．tear   B．break C．crash D．last
55．A．in vain         B．in general  C．in silence   D．in brief

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空


第二節(jié)：完形填空（共20小題；每小題1.5分，滿分30分）
In the past, travel was considered an essential part of education. Posts and writers realized the  16  of travel and went out to other countries in search of  17 . A man’s education was not completed until he had visited foreign lands.
That travel  18 the mind cannot be denied (否認(rèn)). Those who remain within the confines of (在…范圍之內(nèi)) their  19  are cut off from the outside world. As a result, they develop a  20_ outlook on life. But those who travel come into  21  with various types of people whose ways of life are completely 22  theirs. They see things with their own eyes and have a better  23  of the affairs of the world. The impressions that they receive while they travel remain  24  in their minds for many years, and all false impressions and ideas are  25  from their minds. Thus, they are able to  26  things in their proper perspective(觀點(diǎn)) and make correct  27  and decisions. And being able to make correct decisions is a valuable part of  28 .
It is argued, however, that the 29  of the great variety of books, newspaper, the radio, TV and the Internet today remove the  30  for travel to acquire knowledge. One would study in the  31  and privacy of one’s own home and absorb all the knowledge that one desires. But there are many things they cannot  32  effectively. For example, the love and respect people in other lands  33  for us and the natural beauty of the various parts or the world cannot be described properly in  34  .They have to be seen and felt. Besides, not all can understand everything that they  35  about people away from their homes. To such people, especially, travel is an important means of education.
16.A. value             B. possibility              C. background                     D. development
17.A. work             B. wealth                  C. opportunity              D. knowledge
18.A. comforts       B. needs                    C. uses                        D. broadens
19.A. sights                 B. homes                   C. careers                   D. powers
20.A. happy                 B. broad                    C. narrow                  D. simple
21.A. sight                 B. contact                  C. power                   D. effect
22.A. different from   B. the same                C. similar with　          D. familiar to
23.A. protection         B. study                     C. solution                 D. understanding
24.A. little                 B. endless                  C. fresh                     D. important
25.A. removed           B. tired                             C. differed                 D. separated
26.A. do                             B. see                              C. make                    D. buy
27.A. choices                      B. preparations           C. directions               D. judgments
28.A. life                            B. travel                    C. education               D. society
29.A. presence           B. trouble                  C. importance             D. discovery
30.A. need                 B. intention                C. influence　                     D. memory
31.A. library                B. mind                    C. comfort                       D. open
32.A. enjoy               B. describe                 C. write                    D. learn
33.A. satisfy            B. get                              C. own                     D. have
34.A. sounds                B. pens                      C. numbers                  D. words
35. A. see                    B. read                  C. talk                      D. hear

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

.
Our spiritual intelligence quotient，or SQ，helps us understand ourselves，and live fuller，
happier lives．
While we’re all born with SQ，most of us don’t even realize that we have it．Fortunately，you don't have to sign up for classes to learn how to improve your SQ．Here are some simple steps that can lead you to this new level of understanding．
Sit Quietly．The process of developing spiritual intelligence begins with solitude（獨(dú)處）and
silence．To tune in to your spirit，you have to turn down the volume in your busy，noisy，complicated life and force yourself to do nothing at all．Start small by creating islands for silence in
your day．In the car，instead of reading or doing something else，use the time to think．At work，
shut the door to our office between meetings，take a few breaths and let them out very，very slowly．Enjoy the stillness in your home after the kids are finally in bed．
Step Outside．For many people，nature sets their spirit free．Go outside to watch a beautiful
sunset．If you are walking with your dog，take the time to admire flowers in bloom；follow the flight of birds；watch clouds float overhead．
Ask Questions of Yourself．Ask open-ended questions，such as “What am I feeling？” “What are my choices？”or “Where am I heading？” But don’t expect an answer to arrive through some
supernatural form or e-mail．“Rarely do I get an immediate answer to my question，”says Reverend  Joan Carter，a Presbyterian（長(zhǎng)老會(huì)的）minister in Sausalito，California．“But later that day I suddenly find myself thinking about a problem in a perspective（視角）I never considered before．”
Trust Your Spirit．While most of us rely on gut feeling（本能的反應(yīng)）to realize danger，spiritual intelligence pushes us，not away from，but towards some action that will lead to a greater good．
68．The passage is mainly about_________．
A．what your SQ is and in what way it can benefit your life
B．what your SQ is and in what way it can be improved
C．the relationship between your SQ and your life
D．a(chǎn)dvantages and disadvantages of SQ
69．The underlined phrase “tune in to your spirit” in the third paragraph probably means______．
A．get your spirit relaxed    B．keep up your spirit
C．keep seated quietly D．change your spirit
70．The author mentions the example of Reverend Joan Carter to show that_________．
A．there are no immediate answers to your questions
B．e-mails can’t keep working out a problem
C．the more questions you ask，the better answers you’ll get
D．changing your way of thinking might help you solve a problem
71．From the passage，we can know that the most important thing to improve your SQ is________．
A．a(chǎn) peaceful mind             B．deep thought
C．spare time and hobbies   D．good spirits

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

There is an old saying：No one thinks he’s a bad driver. Here’s an updated 21st century version: No one thinks he sends annoying (令人煩惱的) e-mails.
But, plenty of us do.
A Princeton University research found that 22 per cent of Americans say e-mail has added to their work pressures and caused misunderstandings. Here’s a guide on e-mail etiquette (禮節(jié)) to help you avoid being annoying.
Experts say there are three types of e-mails with different rules-close friends, office and public e-mails.
The close friends e-mail
You can send your lover, your closest friends and your siblings (brothers and sisters) anything, from jokes to “you got to see this!”. But bear in mind that not everyone shares your sense of humour and you may expose them to viruses.
The office e-mail
Don’t add to people’s workload. Keep e-mails short and to the point.
◆Make the subject line factual and brief.
◆Write in clear, concise (簡(jiǎn)練的) sentences.
◆Provide your name and phone number at the end.
The public e-mail
Occasionally we have to send an e-mail to a group of people. If possible, write your public e-mails with a who, what, when, where structure. For example:
Who: All members of the soccer team
What: Team photo
When: Saturday, March 25, at noon
Where: Playing field 2.
Finally, before you hit “Send”, check the following:
◆Is the e-mail a “flame”? Never send an e-mail in anger, It could stay around forever and haunt (縈繞心頭) your professional and personal life.
◆Check the “To” field. Is this really who you want to send the message to?
◆Spell-check the message. Does it have an error that can affect you badly?
68. The writer may want to tell the reader that _____.
A. mails online are often sent to wrong places
B. different e-mails should be written in different ways
C. sending office e-mails is sure to add to people’s workload
D. the public e-mail is usually sent to a large number of people
69. According to the writer, _____.
A. e-mails with some misspellings may hurt the receiver
B. before sending an e-mail, the sender should ask someone to check it
C. jokes sent to a close friend online sometimes may be harmful
D. about 80％ of Americans like sending and receiving e-mails
70. If an e-mail is a “flame”, the sender of it must be very _____ at the moment.
A. angry                         B. excited              C. worried                     D. disappointed

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


When it comes to parenting, it can be hard to know which issues are important and which ones are not. According to parenting expert Anne Murphy, a family dinner matters. “Having a family dinner doesn’t only mean hours of sharing various kinds of food,” she said. “It means getting together as long as you can —even if it’s just 15 minutes for pizza. Or make it breakfast or lunch—whatever you can do.
Never waste your valuable time on TV. Keep the conversation joyful—Murphy thinks it makes a difference. Studies have shown that teenagers whose families eat together are less likely to abuse drugs. They also have better grades and—perhaps most importantly—better relationships with their parents. It brings more benefit to children than many after-school activities, she added.
Homework has become a hot issue recently. According to a study, the amount of time kids spend on homework has increased by 51 percent since 1981.
“The point of homework is to make students continue to learn after school hour,” Murphy said. “However, giving too much homework runs the risk of turning kids off school and even worse—turning them off learning in all forms. They will turn to other things, such as computer games, some of which are aggressive, or drinking for fun. Therefore, some experts came up with an idea, that is, kindergarteners and first-graders get 10 minutes of homework. Second-graders get 20 minutes, and so on.”
Murphy offered tips to parents who think their children are getting too much homework. “Talk to other parents to see if they also think so, and then talk to the teacher,” she said. “Have a discussion about it, and let the teacher know that you want to work together on a solution.”
60. According to Anne Murphy, ___________.
A. parents should tell children what matters during dinner time
B. parents should save time and not cook for children
C. it’s important for the family to have a good talk during dinner time
D. it’s important for the family to discuss sharing together
61. Which of the following is the benefit of families eating together?
a. Children are more likely to avoid drugs.
b. Children may have better grades.
c. Children may have a close relationship with their parents.
d. It can save children’s time and prevent them from watching TV.
e. It encourages children to have more after-school activities.
A. a, b, c               B. c, d, e                      C. a, c, e                      D. b, c, e
62. What do we know about homework from the passage?
A. The time spent on homework shouldn’t be over 10 minutes.
B. Too much homework may make students lose interest in study.
C. Homework does not help children continue learning after school.
D. Parents should decide the amount of homework for their children.
63. From the passage, we can learn that___________.
A. children’s time spent on after-school activities is being reduced
B. computer games are making children increasingly aggressive
C. it is unnecessary for young children to do homework
D. some experts think it necessary to reduce children’s homework
64. What does the passage mainly talk about?
A. What matters most in parenting.
B. How to develop a close relationship with children.
C. Family education is important for children.
D. Parents say no to too much homework.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


True love and kindness is needed in this world. It comes from appreciating the object, and rejoicing in the object, wanting the object to be happy and well, but holding it lightly, not tightly. And this goes for possessions too. You are in an extremely materialistic society in which the possession of more and bigger and better is held up as the total criteria(標(biāo)準(zhǔn)) for being happy.
What we own is not the problem; it’s our attitude towards our possessions. If we have something and we enjoy it, that’s fine. If we lose it, then that’s OK. But if we lose it and we are very attached to it in our heart, then that’s not fine. It doesn’t matter what the object is, because it’s not the object which is the problem. The problem is our own inner grasping mind that keeps us bound to the wheel, and keeps us suffering. If our mind was open and could just let thing flow naturally, there would be no pain. Do you understand? We need our everyday life to work on this, to really begin to see the greed of attachment in the mind and gradually begin to lessen and lessen it.
There is a famous story of a coconut, which is said to be used in India to catch monkeys. People take a coconut and make a little hole just big enough for a monkey to put its paw through. And inside the coconut, which is nailed to a tree, they have put something sweet. So the monkey comes along, sees the coconut, smells something nice inside, and he puts his hand in. he catches hold of the sweet inside, so now he has a fist. But the hole is too small for the fist to get out. When the hunters come back, the monkey is caught. But of course, all the monkey has to do is let go. Nobody’s holding the monkey except the monkey’s grasping greedy mind. Nobody is holding us on the wheel; we are clinging to it ourselves. There are no chains.
54. Which of the following is the best title of the passage?
A. Clinging Causes the Pain                       B. Don’t Learn from the Monkey
C. Giving Up is Holding                               D. Possessions are Pains
55. According to the first paragraph, which of the following statements is true?
A. The world now is lacking in true love.
B. Owning more means being happier in today’s society.
C. Today’s society is very realistic.                    
D. The society needs better criteria.
56. According to the passage, the monkey is caught because___________      .
A. the hunter is cleverer than the monkey   
B. the monkey wants to eat the sweet
C. the hole is too small for the monkey’s fist
D. the monkey doesn’t know giving up
57. Why did the author tell the story of the monkey?
A. Because he liked monkeys very much.
B. Because the story is very interesting.
C. Because he wants to explain the idea further.
D. Because he wants to make the passage attractive.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

The clock struck eleven at night. The whole house was quiet. Everyone was in bed except me. Under the strong light, I looked sadly before me at a huge pile of that troublesome stuff(東西) they call “books”.
I was going to have my examination the next day. “When can I go to bed?” I asked
myself. I didn’t answer, In fact I dared not.
The clock struck twelve. “Oh, dear! ” I cried. “Ten more books to read before I can go to bed!” We pupils are the most unhappy creatures in the world. Dad does not agree with me on this. He did not have to work so hard when he was a boy.
The clock struck one. I was quite desperate（絕望的） now. I forgot all I had learned. I was too tired to go on. I did the only thing I could. I prayed, “Oh, God, please help me pass the exam tomorrow. I do promise to work hard afterwards, Amen.” My eyes were so heavy that I could hardly open them. A few minutes later, with my head on the desk, I fell asleep.
64. When the author was going over his lessons, all the others in the house were ________ .
A. asleep           B. outside       C. working in bed    D. quietly laughing at him
65. Reviewing his lessons didn’t help him because   ____  .
A. it was too late at night                   B. he was very tired
C. his eyes lids were so heavy that he couldn’t keep them open
D. he hadn’t studied hard before the examination
66. What do you suppose happened to the author the second day?
A. He went to a church to pray again      B. He got an A in the exam
C. He failed in the exam                D. He was punished by his teacher
67. The best title for the passage would be _________ .
A. The Night Before the Examination        B. Working Far into the Night
C. A Slow Student                        D. Going Over My Lessons

查看答案和解析>>

同步練習(xí)冊(cè)答案