题目
题型：不详难度：来源：
Your cellphone holds secrets about you. Besides the names and numbers that you’ve programmed into it, traces of your DNA remain on it, according to a new study.
DNA is genetic material that appears in every cell. Like your fingerprint, your DNA is unique to you - unless you have an identical twin. Scientists today usually analyze DNA in blood, saliva （唾液）or hair left behind at the scene of a crime. The results often help detectives identify criminals and victims.
Meghan J. McFadden, a biologist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cellphone and later dropped it. This made her wonder whether traces of DNA remained on cellphones - even when no blood was involved. To find out, she and a colleague collected flip-style （翻盖式）phones from 10 volunteers. They collected invisible traces of the users from two parts of the phone: the outside, where the user holds it, and the speaker, which is placed at the user’s ear.
The scientists cleaned the phones using a liquid mixture made mostly of alcohol. The aim of washing was to remove all detectable traces of DNA. The owners got their phones back for another week. Then they returned the phones and the researchers collected traces on each phone once more. They discovered DNA that belonged to the phone’s owner on each of the phones.
Surprisingly, DNA was even picked up immediately after the phones were cleaned. That suggests that washing won’t remove all traces of evidence from a criminal’s cellphone. So cellphones can be added to the list of clues that can settle a crime-scene investigation.
64. In a crime-scene investigation, now experts are likely to turn to ________.
A. the criminal’s fingerprint B. the DNA analysis of physical items
C. the detectives D. the criminal’s cellphone
65. According to the passage, McFadden was inspired by ________.
A. the secrets stored in people’s cellphones B. the special characters of DNA
C. a cellphone-involved case D. the challenging job of detectives
66. According to the passage, the potential application of the new study would be ________.
A. identifying criminals B. designing new cellphones
C. protecting individual privacy D. preventing cellphone-involved crimes
67. Which of the following has the closest meaning with the underlined word “identify” in Paragraph 2?
A. imagine B. recognize C. discover D. determine
答案
64.B 65.C 66.A 67.B
解析
核心考点
试题【Your cellphone holds secrets about you. Besides the names and numbers that you’】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
第三部分: 完形填空（共20小题；每小题2分，满分40分）
阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出空白处的最佳选项，并在答题卡上将该项涂黑。
The back door of the ambulance was suddenly shut and the driver ran to the front, jumped into the seat, and started the engine。 Inside were the 26 parents, Mr。 and Mrs。 Green。 The mother was holding their baby daughter, Ally。 The girl had some 27 stuck in her throat and could 28 breathe。
The driver, Mr。 White, turned on his siren(警报器) and sped towards the 29 hospital, fighting against the time。 The 30 ahead of him pulled out of the way 31 he drove through the busy traffic。 From the back of the 32 the parents were shouting at him to be __33 , since Ally had almost stopped 34 。 In front of him he saw some traffic 35 , with the red “Stop” light shining。 Mr。 white knew he had no time to 36 , so he drove straight through the traffic lights。
Coming towards him from his right was a taxi with the 37 closed, and the driver was playing his radio, He did not 38 the ambulance。 The lights were green; 39 he drove straight on into the ambulance。
Mr。 White tried to stop his ambulance, but it was too 40 。 It hit the taxi。 Everyone was shaken, but no one was hurt。 Mr。 White looked to see 41 little Ally was。 He was astonished to see relief(宽慰) instead of 42 on the faces of the parents。
“Look!” cried Mrs。 Green。 “She is breathing again。”
“It 43 have been the crash,” said her husband, “It 44 the food out of her throat。”
The baby’s color was turning 45 , and she was crying in a loud but healthy voice。 They were all joyful, and quite forgot about the accident。
26。 A。 worried B。 angry C。 satisfied D。 surprised
27。 A。 honey B。 drinks C。 food D。 water
28。 A。 never B。 almost C。 hardly D。 simply
29。 A。 modern B。 promising C。 children’s D。 nearest
30。 A。 interviewers B。 drivers C。 cars D。 parents
31。 A。 that B。 as C。 if D。 as though
32。 A。 street B。 cars C。 traffic D。 ambulance
33。 A。 quick B。 convenient C。 anxious D。 calm
34。 A。 breathing B。 circulating C。 saying D。 talking
35。 A。 signs B。 policemen C。 lights D。 marks
36。 A。 stop B。 spare C。 lose D。 miss
37。 A。 engine B。 car C。 door D。 window
38。 A。hear B。 see C。 find D。 notice
39。 A。 however B。 so C。 but D。 on the other hand
40。 A。 dangerous B。 late C。 careless D。 quick
41。 A。 how B。 what C where D。 who
42。 A。 pleasure B。 anger C。 fear D。 surprise
43。 A。 may B。 can C。 should D。 must
44。 A。 took B。 picked C。 knocked D。 pulled
45。 A。 common B。 normal C。 general D。 ordinary
Signing up for a night class is always a good starting point. Not only is it an ideal way to meet like-minded people，it can also be a great new learning experience. Pubs and clubs can be a good meeting place but can be a bit hard if you are on your own.
Join a gym
GL-14 health club in Manchester city centre is a gym which also has lots of member activities outside the gym from charity fashion shows to dinner dances giving members a chance to socialize away from the treadmill（繁忙的工作）. Or if you want a gym with a difference，try a“Green Gym”for people who want to exercise but wish to be outdoors and doing something that will benefit the environment at the same time. The“work out”could involve such activities as practical conservation or gardening work. It’s a great way to get people’s heart and muscle working. And many agree that meeting other people and having a matter and a laugh is a big attraction of the scheme.
Reading groups
In the Reading Groups，Jenny Hartley suggested that there may be as many as 50，000 people in reading groups in the UK. They range from informal groups of friends or colleagues who meet in someone’s home or at the local pub，to discuss a book. If you want something a bit more structured，lots of libraries have reading groups and could have a broader group of members.
Statistics
The BBC recently conducted a survey called Going solo：single life in the 21st century. You can look at the overall results or search by area. It found that：
*69％ of people thought that the gym was a good place to meet new
*Pubs or clubs were considered to be good meeting places by 58％ of people in the UK
*68％ thought that work was a good place to meet people
*72％ thought that internet chat was not an ideal way to meet people
（ ）56．“Green Gym”in Paragraph 3 refers to an activity in which you can________.
A．have night classes with like-minded people
B．do something good for the environment on your own
C．discuss a book with other members at a pub
D．benefit the environment while doing outdoor exercise
（ ）57．Which of the following is a Green Gym activity？
A．Gardening work. B．Chatting on the Internet.
C．A charity fashion show. D．A dinner dance away from the treadmill.
（ ）58．What’s the most popular place to meet new people outside of work？
A．Pubs or clubs. B．The Internet. C．The working place. D．The gym.
阅读下面短文，从短文后各题的A、B、C、D四个选项中，选出适合填入对应空白处的最佳选项，并在答题卡上将该选项涂黑。
“Are you too stupid to do anything right?” These words — said by a woman to a little boy who was obviously her son — were spoken 26 he had walked away from her. The boy returned, his eyes downcast.
Not a 27 moment, perhaps, 28 small moments last a very long time. And a few words — though they mean 29 at the time to the people who say them — can have great 30 .
I recently heard a story from a man named Malcolm Dalkoff. For the last 24 years he has been a professional 31 . Here is what he told me:
As a boy in Rock Island, Dalkoff was terribly 32 . He had few 33 and no self-confidence. One day, his English teacher, Ruth Brach, gave the class an assignment . The students had been reading To Kill a Mockingbird. Now they were to write their own chapter that would 34 the last chapter of the novel.
Dalkoff wrote his chapter and turned it 35 . Today he can not recall anything 36 about the chapter he wrote, or what 37 Mrs Brach gave him. What he does remember is the four words Mrs Brach wrote in margin（空白）of the paper: “This is 38 writing.”
Four words. They 39 his life.
“ 40 I read those words, I had no ideal of who I was or 41 I was going to be,” he said. “After reading her note, I went home and wrote a short story, something I had always been 42 of doing but never believed I could do.”
Over the rest of that year in school, he wrote many short stories and always brought them to school for Mrs Brach to evaluate. She was 43 , tough and honest. “She was just what I 44 ,” Dalkoff said.
His confidence 45 . Dalkoff believed that none of this would have happened if that woman had not written those four words in the margin of the paper.
| 26. A. where | B. why | C. because | D. when |
| 27. A. wonderful | B. difficult | C. funny | D. big |
| 28. A. yet | B. although | C. for | D. therefore |
| 29. A. much | B. little | C. more | D. most |
| 30. A. meaning | B. power | C. force | D. sense |
| 31. A. writer | B. player | C. poet | D. singer |
| 32. A. sorry | B. proud | C. sick | D. shy |
| 33. A. books | B. ideals | C. friends | D. chances |
| 34. A. follow | B. match | C. decide | D. improve |
| 35. A. on | B. in | C. out | D. down |
| 36. A. more | B. again | C. different | D. special |
| 37. A. honors | B. remarks | C. prizes | D. grade |
| 38. A. poor | B. serious | C. good | D. silly |
| 39. A. changed | B. damaged | C. affected | D. improved |
| 40. A. Unless | B. Until | C. When | D. While |
| 41. A. what | B. how | C. where | D. which |
| 42. A. tired | B. fond | C. proud | D. dreaming |
| 43. A. strict | B. kind | C. encouraging | D. praising |
| 44. A. feared | B. needed | C. expected | D. loved |
| 45. A. grew | B. lifted | C. appeared | D. returned |
Did you ever wonder why leaves change colors in autumn, or how it happens? Here’s a quick explanation.
First of all, you’ve probably noticed that not all trees lose their leaves. There are two major types of trees: deciduous trees and evergreens. Evergreens keep their leaves and stay green all year long. The deciduous trees are the ones that lose their leaves each year.
In autumn, the days begin to get shorter. The sun is also lower in the sky at noon, which causes temperatures to be cooler. The combination of less sunshine and lower temperatures is what causes the deciduous trees to drop their leaves. In winter, deciduous trees “go to sleep”, sort of like a bear goes into hibernation.
Leaves are the food factories for a plant. Unlike animals，plants make their own food by taking energy directly from the sun. Plants do this by using a chemical in their leaves called chlorophyll.
Chlorophyll is green. During the spring and summer the leaves of a deciduous tree look green because there is a lot of chlorophyll there. In autumn, however, the sunshine becomes more scarce and the leaves on the trees stop making new chlorophyll. As the old chlorophyll starts to break down, the green color of the leaf begins to go away.
You’ve probably also noticed that the leaves of different kinds of trees change different colors. The leaves of some trees turn yellow or orange, while the leaves of other trees turn bright red or purple. The different colors are caused by the different chemical reactions that are happening in the leaves.
For example, the leaves of some trees turn yellow when the chlorophyll breaks down. When the green chlorophyll goes away, a yellow pigment in the leaf becomes visible. The yellow pigment, called cartenoid, was already there during the summer, but is was not easily seen because there was too much green chlorophyll.
In other trees where the leaves turn red or purple a different chemical reaction takes place. In those leaves the chlorophyll also breaks down, but another chemical reaction takes place at the same time. Chemicals in the leaves, called starches, begin to change into chemicals called anthocyanins, which give the leaves their red and purple colors.
So next time you see the beautiful colors of autumn you will also know the science behind that beauty.
46. What is the correct term for trees that lose their leaves in the autumn?
A. Evergreens B. Deciduous C. Cartenoids D. Anthocyanins
47. Which of the following is NOT mentioned as a cause of trees dropping their leaves?
A. A change in temperature B. The amount of daylight available
C. Extra chlorophyll D. Chemical changes in the leaves
48. If there are 50 evergreens and 10 deciduous trees in a forest, in autumn what color are most of the leaves in the forest likely to be?
A. GreenB. Red and purple
C. Yellow D. not enough information to determine the answer
49. Which of the following is only present in leaves during the autumn?
A. Chlorophyll B. Starch C. Cartenoids D. Anthocyanins
50. Where would such an article mostly likely be published?
A. In a book B. In a primary school science text book
C. In a magazine for young people D. All are equally likely
I really love my job because I enjoy working with small children and like the challenges and awards from the job. I also think my work is important. There was a time when I thought that I would never have that sort of career.
I wasn’t an excellent student because I didn’t do much schoolwork. In my final term I started thinking what I might do and found I didn’t have much to offer. I just accepted that I wasn’t the type to have a career.
I then found myself a job, looking after two little girls. It wasn’t too hard at first. But the problems began when I agreed to live in, so that I would be there if my boss had to go out for business in the evening. We agreed that if I had to work extra hours one week, she’d give me time off the next. But unfortunately, it didn’t often work out. I was getting extremely tired and fed up because I had too many late nights and early mornings with the children.
One Sunday, I was in the park with the children and met Megan who used to go to school with me. I told her about my situation. She suggested that I should do a course and get a qualification if I wanted to work with children. I didn’t think I would be accepted because I didn’t take many exams in school. She persuaded me to phone the local college and they were really helpful. My experience counted for a lot and I got a part-time course. I had to leave my job with the family and got work helping out at a kindergarten.
Now I have got a full-time job there. I shall always be thankful to Megan. I wish I had known earlier that you could have a career even if you aren’t top of the class at school.
47. What is the author’s present job?
A. Working part-time in a college. B. Taking care of children in a family.
C. Helping children with their schoolwork. D. Looking after children at a kindergarten.
48. When staying with the two girls’ family, the author _______.
A. was paid for extra work B. often worked long hours
C. got much help from her boss D. took a day off every other week
49. What has the author learned from her own experiences?
A. Less successful students can still have a career.
B. Qualifications are necessary for a career.
C. Hard work makes an excellent student.
D. One must chose the job she likes.
50. What does the underlined sentence probably mean?
A. The boss didn’t go out to work very often.
B. The boss often failed to keep his agreement with the writer.
C. The writer couldn’t go out to find another job.
D. The writer seldom had any chance to work outside.
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