21. Don’t be upset by what he said, he meant no . A. excuse B. error C. pain D. offence
22. Life is ten percent ________ happens to you and ninety percent ________ you respond to it. A．which; how B．what; what C．that; that D．what; how
23. When we saw the road _________ with snow and cyclists falling down here and there, we decided to walk to our office.
A．to block B．blocking C．blocked D．to be blocked 24.----Sorry, I can’t chat with you. I on my history paper. ----History paper? I thought you it. A. am working; have finished B. have been working; would finish C. am working; had finished
D. have been working; are finishing
25．In extreme weather, a worn tyre can break easily it’s mended, as is often the case. A. when B. where C. which D. that
26. There isn’t much time, so I’ll just give you the facts, with no additional details. A. absurd B. brilliant C. bare D. adequate
27. It’s belief that parents have to spend nearly 500,000 yuan bringing up a child in China nowadays.
A. beyond B. in C. without D. against
28. We all agree sustainable development is a great idea, but is hard to put into practice. A. the one which B. what C. one that D. which 29. ----Has Steven returned from Boston yet? I’d like to met him. -----Sorry, He back here only for last weekend. A. has been B. would be C. had been D. was
30. ----Sleep experts said people often used the weekend to sleep lost during the weekdays. A. catch up B. catch on to C. catch up on D. catch on
31. Many of the scientists and engineers are judged how great their achievements are. A. in spite of B. in charge of C. in favor of D. in terms of
32. We normally respond to your article within six weeks, and you are free to the article elsewhere at the same time.
A. appoint B. salute C. submit D. register
33. by flowers and applause doesn’t necessarily mean one is living a happy life. A. Accompanied B. Having accompanied C. Be accompanied D. Being accompanied 34. ---- Show me your ID card, please. ---- Oh, it’s not in my pocket. It .
A. must have fallen out B. might fall out C. could fall out D. should have fallen out 35. Washington likes to accuse other governments of violating human rights. However, . Why not try, instead, to get rid of the human rights violations in the United States? A. every coin has two sides
B. one man’s meat is another man’s poison
C. those who live in glass houses should not throw stones
D. you may take a horse to the water, but you cannot make him drink
As high school students pour to social networking sites, campus police are scanning their Facebook and Myspace pages for tips to help 46 fights, monitor gangs (帮派) and prevent crime.
Some students 47 police looking over their shoulders. But officers responsible for school 48 say routine checks of the online forums often add 49 the knowledge they obtain from hallways or schoolyards.
In recent years, school administrators have criticized some campus fights on 50 conflicts and urged parents to keep 51 on their children’s computer activity. But students who use the Web to let their 500 closest friends 52 what they are doing at all times are sometimes 53 that police are watching, too.
Police don’t have special 54 on Facebook or Myspace. Students who want to go 55? can change privacy settings so that their profiles are displayed only to a list of 56 people. But the default (默认) settings leave those profiles 57 to many Internet users (in the case of Facebook) or all of them (in the case of Myspace).
Employers and college admission officers have 58 online profiles of student 59
for some time. Police across the country have been doing the same for the past two or three years, said Kevin Quinn, a spokesman for the National Association of School Resource Officers.
“If you are already 60 with the technology, it doesn’t take you but a couple of 61 to get into the student population and keep an eye on things,” Quinn said.
Late last month, Fairfax County police 62 the arrest of seven Chantilly area teenagers for trying to recruit (招募) Franklin Middle School students to a gang. Fairfax police say they 63 themselves on addressing issues in schools 64 they develop into major problems. Keeping an eye on Facebook and Myspace has become an extra tool in their 65 , they said.
46. A. keep up B. pick up C. break up D. give up 47. A. object to B. stick to C. adjust to D. lead to 48. A. performance B. curriculum C. safety D. report 49. A. on B. in C. up D. to
50. A. social B. online C. political D. cultural 51. A. watch B. pressure C. emphasis D. focus 52. A. wonder B. decide C. know D. help
53. A. excited B. surprised C. satisfied D. delighted 54. A. occasion B. favor C. right D. address
55. A. uncovered B. unknown C. undamaged D. unpunished 56. A. common B. informed C. local D. approved 57. A. secret B. close C. open D. equal
58. A. examined B. changed C. saved D. created 59. A. leaders B. bloggers C. friends D. applicants 60. A. happy B. upset C. familiar D. patient 61. A. months B. weeks C. days D. minutes
62. A. claimed B. announced C. witnessed D. questioned 63. A. blame B. pride C. base D. impress 64. A. as B. when C. before D. until
65. A. effort B. career C. website D. school 马上分享给朋友：
A
Ask Dr ? Jeffers Dear Dr. Jeffers, One of my colleagues, Felix Moeller, told me that scientists are learning to use computer to ‘read minds’. Is there any truth to this story/ —Jane Leon, New York, USA Dear Ms. Leon, Well, a lot of research is being conducted in this area, but so far, the brain scanning equipment and corresponding computer programs haven’t been able to actually read thoughts. In one experiment, test subjects（受试者）were connected to scanning equipment and shown two numbers on a screen. They were then asked to choose between adding or subtracting（减）the two numbers. Using this method, researchers were able to follow brain processes and make the correct assumptions（假设）70 percent of the time. It’s not quite mind reading, but it’s certainly a first step. —Dr. J. Dear Dr. Jeffers, My three-year-old son loves it when I dig my fingers into his sides and tickle（胳肢）him until he laughs uncontrollably. The other day I noticed him trying to tickle himself but he couldn’t do it. Why not? —Glenn Lewis, Vancouver, Canada Dear Mr. Lewis, It’s because of how the brain works. The brain is trained to know what to pay attention to and what to ignore. It causes us to ignore physical feelings we expect to happen, but it causes a mild panic reaction when there is an unexpected feeling. For example, you don’t notice how your shoulder feels while you’re walking This month Dr. Jeffers is answering questions about the human brain and how it works. down the street. But if someone comes up behind you and touches you lightly on the shoulder, you may jump in fear. It’s that unexpected part that causes the tickle reaction. —Dr. J. 46. What can we learn from the answer to the first question?
A. Some equipment is able to read human minds. B. Some progress has been made in mind reading. C. Test subjects have been used to make decisions. D. Computer programs can copy brain processes. 47. People laugh when tickled by others because the feeling is _______.
A. unexpected B. expected C. comfortable D. uncomfortable 48. Who has got a little child according to the text?
A. Ms. Leon B. Mr. Lewis C. Mr. Moeller D. Dr. Jeffers 49. According to the text, Jeffers is probably _______.
A. a computer programmer B. a test subject C. a human brain expert D. a medical doctor
C
The geologic（地质的）time scale is the time scale used by scientists to describe the time and relationship between events that happened during the history of Earth. Because earth is over 4,570 million years old, the time scale that humans use to mark their own time-days, years, and centuries-is in too small of increments to be of use when measuring Earth time.
The geologic time scale is broken down into units according to particular events that occurred in various periods. Generally, the periods of time on the geologic time scale are described by major geological events, such as the disappearance of the dinosaurs or the rise of man.
