Isthereanythingmoreimportantth-优题课

The United States is on the verge of losing its leading place in the world’s technology. So says more than one study in recent years. One of the reasons for this decline is the parallel decline in the number of U.S. scientists and engineers.
Since 1976, employment of scientists and engineers is up 85 percent. This trend is expected to continue. However, the trend shows that the number of 22-year-old the near term source of future PhDs is declining. Further adding to the problem is the increased competition for these candidates from other fields law，medicine，business，etc. While the number of U.S. PhDs in science and engineering declines，the award of PhDs to foreign nationals is increasing rapidly.
Our inability to motivate students to pursue science and engineering careers at the graduate level is compounded because of the intense demand industry has for bright Bachelor‘s and Master‘s degree holders. Too often，promising PH.D.candidates, confronting(面临) the cost and financial sacrifice of pursuing their education, find the attraction of industry irresistible.
67. The U.S.will come to lose its leading place in technology probably because ________.
A. scientists and engineers are not employed
B. the number of PH.D. degree holders is declining
C. the number of scientists and engineers is decreasing
D. the number of 22-year-ilds is declining
68. The field of science and engineering is facing a competition from ________ .
A. postgraduates B. technology
C. such fields as law，medicine and business
D. foreign nationals
69. Large-scale enterprises now need _______.
A. new inventions B. engineers
C. advanced technology D. bright graduates and postgraduates
70. PH.D. candidates "find the attraction of industry irresistible" means that _________.
A. they cannot work for industry any longer
B. they find industry is attracting more and more college students
C. they don’t think they can prevent themselves from working for industry
D. they cannot resist any attraction from all sides

More than 2 million US teenagers have suffered a serious bout（发作) of depression in the past year, according to a federal government survey released on Tuesday.
On average, 8.5 percent of adolescents aged 12 to 17 described having had a major depressive episode in the previous year, the Substance Abuse and Mental Health Services Administration reported.
But there were "striking differences" by sex, with 12.7 percent of girls and 4.6 percent of boys affected.
Depression is the leading cause of suicide, which in turn is the third-leading cause of death for 15- to 24-year-olds in the United States.
"Combined 2004 to 2006 data show that rates of past year major depressive experience among youths aged 12 to 17 generally increased with increasing age," the researchers wrote.
Researchers at SAMHSA and RTI International in Research Triangle Park, North Carolina, prepared the report using data from the National Survey on Drug Use and Health.
More than 67,700 youths aged 12 to 17 answered questions about mood and depression. They were also asked to rate how depression affected them using the Sheehan Disability Scale, which measures impact on family, friends, chores at home, work and school.
Researchersdefined a major depressive episode as two weeks or longer of depressed mood or loss of interest or pleasure, and at least four other symptoms(症状) such as problems with sleep, energy, concentration or self-image.
Nearly half of the teenagers who had major depression said it severely damaged their ability to function in at least one of the areas on the disability scale.
"Fortunately, depression responds very well to early intervention and treatment," SAMHSA Administrator Terry Cline said in a statement.
63. The underlined word “ episode ”in paragraph 2 has the similar meaning as the given word
A. experiment B. feeling C. expression D. experience
64. The main reasons which lead to serious depressive symptoms include .
A. no family or friends or jobs or interests at all
B. low spirits , unhappiness , lack of sleep and poor concentration
C. poor health , sex discrimination , less energy and loss of interest
D. suicide , sandness , lack of confidence and depression
65. What can be implied , but is not stated directly ?
A. depression is the third-leading cause of suicide
B. There were more girl students suffering depression than boys
C. There were over 2 million American teens suffering depression in the past two years
D. The students surveyed were aged between `12 and 17
66. What will the following paragraph probably talk about according to the passage ?
A. How to recover from stress B. How to prevent and treat depression
C. How to live a comfortable life D. How to have a happy feeling

People tend to think of computers as isolated machines, working away all by themselves. Some personal computers do without an outside link, like someone's secret cabin in the woods. But just as most of homes are tied to a community by streets, bus routes and electric lines, computers that exchange intelligence are part of a community local, national and even global network joined by telephone connections.
　　The computer network is a creation of the electric age, but it is based on old-fashioned trust. It cannot work without trust. A rogue (流氓) loose in a computer system called hacker is worse than a thief entering your house. He could go through anyone's electronic mail or add to, change or delete anything in the information stored in the computer's memory. He could even take control of the entire system by inserting his own instructions in the software that runs it. He could shut the computer down whenever he wished, and no one could stop him. Then he could program the computer to erase any sign of his ever having been there.
Hacking, our electronic-age term for computer break-in is more and more in the news, intelligent kids vandalizing（破坏）university records, even pranking (恶作剧) about in supposedly safeguarded systems. To those who understand how computer networks are increasingly regulating life in the late 20th century, these are not laughing matters. A potential for disaster is building: A dissatisfied former insurance-company employee wipes out information from some files; A student sends out a "virus", a secret and destructive command, over a national network. The virus copies itself at lightning speed, jamming the entire network thousands of academic, commercial and government computer systems. Such disastrous cases have already occurred. Now exists the possibility of terrorism by computer. Destroging a system responsible for air-traffic control at a busy airport, or knocking out the telephones of a major city, is a relatively easy way to spread panic. Yet neither business nor government has done enough to strengthen its defenses against attack. For one thing, such defenses are expensive; for another, they may interrupt communication, the main reason for using computers in the first place.
59. People usually regard computers as .
A. a small cabin at the end of a street
B. part of a network
C. means of exchanging intelligence
D. personal machines disconnected from outside
60. The writer mentions “ a thief ”in the second paragraph most probably to .
A. look into the case where hackers and thieves are the same people
B. demand that a computer network should be set up against thieves
C. tell people that thieves like to steal computers nowadays
D. show that a hacker is more dangerous than a thief
61. According to the passage , a hacker may do all the damages below EXCEPT .
A. destroying computer systems .
B. creating many electronic-age terms .
C.. entering into computer systems without being discovered
D. attacking people’s e-mails
62. By saying “ Now exists the possibility of terrorism by computer ”(the underlined ) the writer means that .
A. students who send out a “ virus ”may do disastrous damages to thousands of computers
B. some people may spread fear in public by destroying computer systems
C. some employees may erase information from some files
D. some terrorists are trying to contact each other using electronic mails

The United States is on the verge of losing its leading place in the world’s technology. So says more than one study in recent years. One of the reasons for this decline is the parallel decline in the number of U.S. scientists and engineers.
Since 1976, employment of scientists and engineers is up 85 percent. This trend is expected to continue. However, the trend shows that the number of 22-year-old the near term source of future PhDs is declining. Further adding to the problem is the increased competition for these candidates from other fields law，medicine，business，etc. While the number of U.S. PhDs in science and engineering declines，the award of PhDs to foreign nationals is increasing rapidly.
Our inability to motivate students to pursue science and engineering careers at the graduate level is compounded because of the intense demand industry has for bright Bachelor‘s and Master‘s degree holders. Too often，promising PH.D.candidates, confronting(面临) the cost and financial sacrifice of pursuing their education, find the attraction of industry irresistible.
67. The U.S.will come to lose its leading place in technology probably because ________.
A. the number of PH.D. degree holders is declining
B. the number of scientists and engineers is decreasing
C. the number of 22-year-ilds is declining
D. scientists and engineers are not employed
68. The field of science and engineering is facing a competition from ________ .
A. technology B. foreign nationals
C. such fields as law，medicine and business
D. postgraduates
69. Large-scale enterprises now need _______.
A. bright graduates and postgraduates B. new inventions
C. advanced technology D. engineers
70. PH.D. candidates "find the attraction of industry irresistible" means that _________.
A. they find industry is attracting more and more college students
B. they don’t think they can prevent themselves from working for industry
C. they cannot resist any attraction from all sides
D. they cannot work for industry any longer

More than 2 million US teenagers have suffered a serious bout（发作) of depression in the past year, according to a federal government survey released on Tuesday.
On average, 8.5 percent of adolescents aged 12 to 17 described having had a major depressive episode in the previous year, the Substance Abuse and Mental Health Services Administration reported.
But there were "striking differences" by sex, with 12.7 percent of girls and 4.6 percent of boys affected.
Depression is the leading cause of suicide, which in turn is the third-leading cause of death for 15- to 24-year-olds in the United States.
"Combined 2004 to 2006 data show that rates of past year major depressive experience among youths aged 12 to 17 generally increased with increasing age," the researchers wrote.
Researchers at SAMHSA and RTI International in Research Triangle Park, North Carolina, prepared the report using data from the National Survey on Drug Use and Health.
More than 67,700 youths aged 12 to 17 answered questions about mood and depression. They were also asked to rate how depression affected them using the Sheehan Disability Scale, which measures impact on family, friends, chores at home, work and school.
Researchersdefined a major depressive episode as two weeks or longer of depressed mood or loss of interest or pleasure, and at least four other symptoms(症状) such as problems with sleep, energy, concentration or self-image.
Nearly half of the teenagers who had major depression said it severely damaged their ability to function in at least one of the areas on the disability scale.
"Fortunately, depression responds very well to early intervention and treatment," SAMHSA Administrator Terry Cline said in a statement.
63. The underlined word “ episode ”in paragraph 2 has the similar meaning as the given word
A. feeling B. expression C. experience D. experiment
64. The main reasons which lead to serious depressive symptoms include .
A. low spirits , unhappiness , lack of sleep and poor concentration
B. poor health , sex discrimination , less energy and loss of interest
C. suicide , sandness , lack of confidence and depression
D. no family or friends or jobs or interests at all
65. What can be implied , but is not stated directly ?
A. There were more girl students suffering depression than boys
B. There were over 2 million American teens suffering depression in the past two years
C. The students surveyed were aged between `12 and 17
D. depression is the third-leading cause of suicide
66. What will the following paragraph probably talk about according to the passage ?
A. How to have a happy feeling B. How to live a comfortable life
C. How to recover from stress D. How to prevent and treat depression

A．wasaheavysmoker	B．didn’tsmokesomuch
C．didn’tsmoke	D．begantolearntosmoke