“The world"s oceans are slowly getting more acidic(酸的),” say scientists. The res
题型：不详难度：来源：
“The world"s oceans are slowly getting more acidic(酸的),” say scientists. The researchers from California report that the change is taking place in response to higher levels of carbon dioxide in the atmosphere.
The lowering of the waters" PH value is not great at the moment but could cause a serious threat to current ocean life if it continues, they warn. Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature. Increasing use of oil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater. Once in the water, it reacts to form carbonic acid. Scientists believe that the oceans have already become slightly more acidic over the last century.
These researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change. “This level of acidity will get much more extreme in the future if we continue releasing CO2 into the atmosphere,” said Dr Caldeira. And we predict the amount of future acidity will be greater than anything we have seen over the last several hundred million years.
However, it is not absolutely clear what that means for ocean life. Most organisms live near the surface, where the greatest PH change would be expected to occur, but deep－ocean life forms may be more sensitive to PH changes. Coral reefs and other organisms whose shells contain calcium carbonate(碳酸钙) may be particularly affected if the water"s acidity levels keep going up, the team predict. They could find it much more difficult to build these structures in water with a lower PH.
In recent years some people have suggested storing carbon dioxide from power station in the deep ocean as a way of dealing with global warming. But Dr Caldeira said that such a strategy should now be re—considered. “Previously, most experts had looked at ocean absorption of carbon dioxide as a good thing——because in releasing CO2 into the atmosphere we warm the planet, and when CO2 is absorbed by the ocean, it reduces the amount of greenhouse warming.”
67. The ocean is becoming more acidic due to___________.
A. the lower water PH value B. the warming atmosphere
C. the higher level of CO2 in the air D. the increasing use of oil fuels
68. According to Dr Caldeira, ___________.
A. ocean absorption of carbon dioxide is a good thing
B. more oil fuels will be used in the near future
C. scientists may predict climate changes with computer models
D. the future situation of the amount of acidity is extremely serious
69. If the water"s acidity level keeps rising, ___________.
A. ocean life whose structures contain calcium carbonate may be affected
B. the water"s PH value will become higher and higher
C. organisms living near the surface are more sensitive to PH changes
D. some disastrous events will occur more often than before
70. Most experts once believed storing carbon dioxide in the ocean would reduce___________.
A. the CO2 absorbed by the ocean B. the amount of greenhouse warming
C. the acidity of the ocean D. the gradual release of CO2
答案
小题1:C
小题2:D
小题3:A
小题4:B
解析
举一反三
One morning last summer Joyce Andrews made some sausage sandwiches for her husband’s lunch. There was one sausage left over. Mrs. Andrews didn’t care for them herself, and so she gave to last one to Henry, their little dog, Henry ate it up quickly.
During the morning the dog got ill. He wouldn’t stop shaking his head, and couldn’t stand properly. Joyce thought, “He’s eaten something that didn’t agree with him. Maybe that sausage very bad…” she suddenly remembered her husband’s lunch. She ran to the telephone and called Jim at office.
“Jim, I hope you haven’t eaten any of those sandwiches yet.”
“You have? Two? Well, listen—don’t eat any more. I gave Henry the last sausage, and new he’s ill. Go to
the doctor, Jim.”“What? You feel all right? No, Jim, don’t take a chance with your health. I’m sure the sausages are bad. Please go…”
“Yes, Jim. Tell him about the dog. Get some medicine.”
Jim came back at lunch time and went to bed. “I had a very unpleasant hour at the doctor” he told Joyce, “and the medicine made me very sick.”
The next morning Jim was fine. Henry seemed quite fit again,
too. At eleven o’clock milkman came with the milk. 
“Morning, Mrs. Andrews,” the milkman said “How’s your dog this morning? I’ve been thinking about him…”
“Have you? Well, he seems all right now, but...”
“Yesterday morning he and I had I a little accident. He jumped up at me, and I dropped a bottle of milk on his head.”
67. Why did Joyce telephone Jim?
A. She wanted him to come home for lunch
B. Jim’s dog was badly ill.
C. Jim was ill and needed to go to the hospital
D. She thought the sausage would do harm to him
68. Joyce’s husband ________.
A. took her advice that he should go to the hospital B. didn’t believe her
C. knew why Henry kept shaking his head D. didn’t eat any of the sausage
69. Which of the following is TRUE according to the text?
A. It was the sausage that made Henry ill.
B. Jim ate only two sandwiches, so he was quite all right.
C. The milkman explained Henry’s illness
D. Jim felt unpleasant because of her wife’s telephone call.
70. The underlined word “him” probably refers to _________.
A. Jim B. the milkman C. the doctor D. Jim’s dog
第一节完形填空(共15小题；每小题2分．满分30分)
阅读下面短文，掌握其大意．然后从1—15各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。
Entering the drama room I am immediately surrounded by the familiar sights, smells and sounds. Streaks(条纹，线条) of light cast by the blinds of the tall ___1___ send shafts(杆状物) of light through the dusty air. I take a deep breath and the concrete and paint ___2___ tickle my nose. I ___3___ everything about this room.
Some of the best times of my life have been spent here. It’s ironic(讽刺的), but the ___4___ is the only place where I feel that I don’t have to __5 ___ to be someone I’m not. Like many teenagers, I almost ___6___ think that people are judging me, but when I act, that feeling disappears. People only look at your acting ability, not your clothing, money, choice of friends, or any of the other ways people are usually ___7 ___.
When I’m on stage, everything else vanishes(消失). All the worries and __8 ___ of the outside world are put on hold. Nervousness is still present, but it’s the excited and tingly kind, not the queasy(不稳定的) ___9 ___ of being different and alone.
I ___10___ love to work backstage and on lighting. I ___11___ you could find another girl who would work on a ladder ___12___ her elbows in cables and dust and love every second of it. It makes me unique and gives me a sense of ___13___ to know that I succeed in an area where few others — and virtually(事实上) no girls — do.
High school is a difficult atmosphere, to put it ___14___. Like others, I’m often insecure(不安的), not ___15___ who I am or where I’m going in life. Wherever that may be, I will always have the confidence I get from theater.
1. A. doors B. windows C. roofs D. walls
2. A. smells B. tastes C. sounds D. looks
3. A. hate B. love C. miss D. forget
4. A. room B. office C. building D. stage
5. A. pretend B. expect C. want D. decide
6. A. hardly B. seriously C. constantly D. happily
7. A. thought of B. judged C. taken care of D. feeling
8. A. happiness B. anxieties C. chances D. pressures
9. A. feeling B. idea C. hope D. fact
10. A. seldom B. almost C. relatively D. absolutely
11. A. hope B. doubt C. think D. suspect
12. A. up for B. out at C. up to D. down to
13. A. pride B. duty C. humor D. sight
14. A. cruelly B. tensely C. friendly D. mildly
15. A. fond of B. afraid for C. sure of D. interested in
第二节完形填空(共20小题；每小题1．5分，共30分)
阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。
"How did you do it, Dad? How have you 36 to not take a drink for almost 20 years?" It took me almost 20 years to have the___ 37___to even ask my father this very personal question. When Dad first 38 drinking, the whole family was on pins and needles every time he 39 a situation that, in the past, would have 40 him drinking again. For a few years we were afraid to bring it up 41 the drinking would begin again.
"I had this little poem that I 42 recite to myself at least four to five times a day," was Dad"s reply to my 18-year-old 43 question. "The words were an instant relief and constant 44 to me that things were never so 45 that I could not handle them," Dad said. And then he 46 the poem with me. The poem"s simple, yet profound words immediately became part of my daily 47 as well.
About a month after this talk with my father, I 48 a gift in the mail from a friend of mine. It was a book of daily affirmations （誓词）with one affirmation 49 for each day of the year.
It has been my experience that when you get 50 with days of the year on it, you automatically turn to the 51 that lists your own birthday.
I 52 opened the book to November 10 to 53 what words of wisdom this book had in store for me. I did a double-take and tears of 54 and appreciation rolled down my face. There, on my birthday, was the 55 same poem that had helped my father for all these years! It is called the Serenity （安详）Prayer:
God, grant me the Serenity to accept the things I cannot change; the Courage to change the things I can; and the Wisdom to know the difference.
36. A. prepared B. promised C. managed D. performed
37. A. courage B. opportunity C. inspiration D. reason
38. A. began B. avoided C. permitted D. quit
39. A. got away with B. got into C. got down to D. got through
40. A. forbade B. started C. attracted D. caused
41. A. for fear B. for sure C. so that D. otherwise
42. A. should B. might C. would D. had to
43. A. unanswered B.unasked C. unexpected D. unwelcome
44. A. prayer B. performer C. inspector D. reminder
45. A. rough B. severe C. tough D. urgent
46. A. created B. explained C. spared D. shared
47. A. schedule B. routine C. habits D. customs
48. A. mistook B. posted C. accepted D. received
49. A. copied B. presented C. listed D. printed
50. A. something B. anything C. everything D. nothing
51. A. date B. page C. matters D. problems
52. A. doubtedly B. eventually C. patiently D. hurriedly
53. A. see B. recite C. repeat D. forecast
54. A. sadness B. loneliness C. disbelief D. belief
55. A. exact B. correct C. almost D. much
When I was about 13, my father would take me on short outings on Saturdays. On the way home, Dad _36_ stopped at the Dairy Queen for 10-cent ice creams. I couldn’t _37_ it, but I could pray from the _38_ we started heading home to that corner where we would either go straight for the ice cream or _39_ and go home empty-handed. That corner _40_ either mouth-watering excitement or _41_.
On one special day, we were heading home, and again I was praying for the _42_ sound of his offer. It _43_. “Would you like an ice cream today?” “That sounds great, Dad!” But then he said, “How would you like to _44_ today?”
Twenty cents! My mind reeled(震惊). I could afford it. I got a weekly allowance of 25 cents, plus some _45_ for odd jobs(零活). But _46_ it was my money, ice cream wasn’t a good use of it. In a fit of _47_, I said, “Well, in that case, I guess I’ll _48_.” My father just said, “Okay, Son.”
But as we headed home, I realized how wrong I was and begged him to _49_. But he just said, “That’s okay, we don’t really need one.” I felt _50_ for my selfishness and ungratefulness. He didn’t mind, or _51_ act disappointed.
I _52_ that generosity（慷慨）goes two ways and gratefulness sometimes costs more than “thank you”. On that day gratefulness would have cost 20 cents and it would have been the _53_ ice cream I’d ever had.
I’ll tell you one more thing. We _54_ another trip the next week. As we _55_ the corner, I said, “Dad, would you like an ice cream today? My treat.”
| 小题1: |
|
| 小题2: |
|
| 小题3: |
|
| 小题4: |
|
| 小题5: |
|
| 小题6: |
|
| 小题7: |
|
| 小题8: |
|
| 小题9: |
|
| 小题10: |
|
| 小题11: |
|
| 小题12: |
|
| 小题13: |
|
| 小题14: |
|
| 小题15: |
|
| 小题16: |
|
| 小题17: |
|
| 小题18: |
|
| 小题19: |
|
| 小题20: |
|
第一节完形填空(共15小题；每小题2分．满分30分)
阅读下面短文，掌握其大意．然后从1—15各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。
Teaching my first child, Danae, to share her toys was the biggest challenge. To 1 this, we started inviting other children to play, which could help Danae discover that it’s fun to share with others — a lesson I needed to 2 myself as well, as it 3 .
One evening Danae had 4 a friend, Natalie, to play with her. Their favorite was a children’s card game called Go Fish. That evening, after Natalie left, Danae came to me and said, “Mommy, I’d like to give these to Natalie tomorrow. They’re her favorites.”
She held up three cards from the Go Fish game. I tried to 5 that I didn’t want her to give them away because then our 6 wouldn’t be complete. “But I really want her to have them!” Danae 7 . I thought perhaps she didn’t understand that when she gave something away, it was gone 8 . So I tried again, saying, “Once you give the cards to her, you can’t 9 them back tomorrow.”
A look of 10 came over Danae’s face. For a moment I was happy that she seemed to 11 . But then she smiled and said. “Well, that’s okay; I want her to have them anyway.”
What could I say to that? I sat 12 for a moment and then I realized I had been trying for so long to ask her to share. Did it 13 that our Go Fish set would be 14 ? What mattered was that my daughter was learning the 15 of giving, that she was thinking about others instead of herself, and that she was trying to make her friends happy. Isn’t that what life is all about?
1．A．achieve B．apply C．receive D．get
2．A．design B．know C．create D．review
3．A．turned up B．turned away C．turned to D．turned out
4．A．begged B．encouraged C．invited D．found
5．A．explain B．suggest C．respond D．teach
6．A．thing B．card C．set D．toy
7．A．insisted B．recommended C．announced D．cried
8．A．surely B．suddenly C．forever D．indeed
9．A．ask for B．call for C．look for D．care of
10．A．surprise B．concern C．delight D．satisfaction
11．A．understand B．accept C．refuse D．doubt
12．A．sadly B．angrily C．quietly D．slowly
13．A．work B．mean C．remind D．matter
14．A．incomplete B．lost C．limited D．gone
15．A．content B．usefulness C．way D．joy
最新试题
- 精子的形成过程是[ ]A．精原细胞→精细胞→初级精母细胞→精子B．精原细胞→初级精母细胞→次级精母细胞→精细胞→
- The servant opened the door and _______me into the house.A．a
- ．现有直径约l cm左右的小玻璃球若干只，小赵同学利用托盘天平、分度值为2mL的大号量杯和水等器材测量小玻璃球的密度，他
- 科学发展观的第一要义是( )A．文明B．发展C．民主D．和谐
- 2011年10月20日深圳新闻网载文指出，陕西省西安市未央区第一实验小学为部分学生发放绿领巾，要求这些学生进行佩戴。据该
- 下图是讨论三角函数某个性质的程序框图，若输入，则输出i=（ ）。
- 果蝇的发育过程与蝗虫的发育过程相比，相同之处是（ ）A．都是有性生殖，不完全变态发育B．都是有性生殖，完全变态发育C．
- 一台小电风扇工作时，电压为12V，若用铅蓄电池来提供，则需要______只串联，若用干电池来提供，则需______节串联
- 我们已经熟悉的下列物质中，溶于水时不会放出大量热量的是 [ ]A．生石灰B．NaOH固体C．浓H2SO4D．Ca
- 我国的黄河流域存在着严重的生态问题，其中水土流失是头号问题。因此，我国也加强了对黄河流域的综合治理。读“黄河流域水系图”
热门考点
- t℃时，向一支盛有0.15 g熟石灰的烧杯中加入50 g水，充分振荡后静置，烧杯底部仍有未溶解的白色固体。下列相关叙述正
- 关于世界三大宗教的叙述不正确的是（ ） A．都产生于亚洲B．都在社会矛盾尖锐的情况下产生 C．依次产生的时间间隔大致
- 原始农业产生的标志是A．采集经济的出现B．种植经济的出现C．渔猎经济的出现D．畜牧业的出现
- 下列各句中，没有语病的一句是[ ]A．随着一场大雨的到来，使华北地区持续了近三个月的旱情得到了初步缓解，但要彻底
- 被评为新中国成立以来感动中国人物之一的我国杰出科学家和航天事业的奠基人钱学森曾经直截了当地说，从前我在国外待了很长时间，
- 阅读下面文字，根据拼音写出相应的汉字或根据汉字写出正确的拼音。(4分)徜徉在文学的世界里，一本书就是一hóng(
- 史书记载：“水激轮转，众筒兜水，次第下倾于岸上。。。。。。以灌稻田，日夜不息，绝胜人力。”这种提水灌溉工具是A．水排B．
- 根据句意，用括号中所给词的适当形式填空。（5分）小题1:Don’t give up ________________(s
- Acomputer does only what thinking people _______.A．have it t
- 早期资产阶级革命最重要的成就是A．彻底摧毁了欧洲封建制度B．使资本主义由工场手工业向机器大工业过渡C．确立资本主义社会的
© 2017-2019 超级试练试题库,All Rights Reserved.