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Chafing gear should be placed（）.
A . at all wearing points of mooring lines
B . at the bitter ends of all standing rigging
C . around running rigging
D . on wire rope only
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患者女性，30岁，与人吵架后出现全身麻木、胸闷。查体：神志清，呼吸浅促，双手搐搦，血压120∕70mmHg，心率120次∕分。血气分析：pH7.50，PaO2100mmHg，PaCO220mmHg，24mmol∕L，BE5mmol∕L，K+3.0mmol∕L，该患者出现何种酸碱平衡失调（）。
A . 代谢性酸中毒
B . 代谢性碱中毒
C . 呼吸性酸中毒
D . 呼吸性碱中毒
E . 代谢性酸中毒合并呼吸性碱中毒
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患者女性，30岁，与人吵架后出现全身麻木、胸闷。查体：神志清，呼吸浅促，双手搐搦，血压120／70mmHg，心率120次／分。血气分析：pH7.50，PaO2100mmHg，PaCO220mmHg，HCO3-24mmol／L，BE5mmol／L，K+3.0mmol／L，该患者出现何种酸碱平衡失调（）
A . 代谢性酸中毒
B . 代谢性碱中毒
C . 呼吸性酸中毒
D . 呼吸性碱中毒
E . 代谢性酸中毒合并呼吸性碱中毒
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患者女性，30岁，与人吵架后出现全身麻木、胸闷。查体：神志清，呼吸浅促，双手搐搦，血压120/70mmHg，心率120次/分。血气分析：pH7.50，PaO2100mmHg，PaCO220mmHg，HCO-24mmol/L，BE5mmol/L，K+3.0mmol/L/，该患者出现何种酸碱平衡失调（）
A . 代谢性酸中毒
B . 代谢性碱中毒
C . 呼吸性酸中毒
D . 呼吸性碱中毒
E . 代谢性酸中毒合并呼吸性碱中毒
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Scientists are developing an intelligent robot that can “see” and “touch” and make decisions like human beings.
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Scientists are developing an intelligent robot that can “see” and “touch” and make decisions like human beings.
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The correct pronunciation of the word “factory” should be /ˈfæ(k)təri/.
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Great as Newton was, many of his ideas _______today and are being modified by the work of scientists of our time.
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________ the calculation is right， scientists can never be sure that they have included all variables and modeled them accurately.
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CAN ANIMALS BE MADE TO WORK FOR US？ Can animals be made to work for us？ Some scientists think that one day animals may be trained to do a number of simple jobs that are now done by human beings. The
21. Now many animals can do some simple jobs that are done by human beings.
22. The writer says that 8t a circus we can see animals doing cIever tricks.
23. The trainer usually gives the animal a piece of candy or fruit after it has done the trick.
24. The reward in the passage means "attention paid to a good behavior".
25. Many animals may be trained to do simple jobs if they know who their trainers are.
26. Geese can be used to guard a house.
27. When the pigeon sees a ball which looks different from the others , it makes a noise.
28. Trainer usually spends 40 days or so training a pigeon to inspect sm811 steel balls.
29. An ape is a large monkey.
30. Scientists believe apes may drive buses one day.
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You are in a tropical port．The refrigeration machinery on a container loaded with air-cooled fruit fails．It cannot be repaired for 18 to 24 hours．Which step should you take to reduce the temperature rise and spoilage of the fruit ________．
A.Discharge a cylinder of nitrogen into the container
B.Shade the container and periodically hose it down
C.Seal any ventilation openings and add dry ice
D.Spread ice over the top layer and in any voids within the container
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【多选题】A good brand name should be should be easy to pronounce, recognize and remember.
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Other scientists believe that environmental problems are getting worse and soon it will be too late to save the environment.
A)另一些科学家说能源的问题显得很糟 , 节约能源为时已晚。
B)另一些科学家的观点是能源的状况很糟 , 节约能源迫在眉睫。
C)另一些科学家坚信环境问题会更严重 , 并且很快人们的环境将无法挽救。
D)另一些科学家相信环境变得更糟糕了 , 并且已经来不及挽救了。
E)另一些科学家认为环境问题会更严重 , 并且很快这种糟糕的环境将无法挽救。
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Young trees____ quite often.should wterB．should be wterC．should be wteredD．wtered
Young trees____ quite often.should wter B．should be wter C．should be wtered D．wtered
A．should water
B．should be water
C．should be watere
D．watered
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________ they are observing can be tested in a practical way, scientists will use experiments.
A、If
B、All that
C、What
D、If what
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Forty May Be the New 30 As Scientists Redefine Age Is 40 really the new 30？ In many ways people today act younger than their parents did at the same age.
Scientists have defined a new age concept and believe it could explain why populations are aging, but at the same time seem to be getting younger.
Instead of measuring aging by how long people have lived, the scientists have factored in how many more years people can probably still look forward to.
"Using that measure, the average person can get younger in the sense that he or she can have even more years to live as time goes on," said Warren Sanderson of the University of New York in Stony Brook.
He and Sergei Scherbov of the Vienna lnstitute of Demography (人口统计学) at the Austrian (奥地利的) Academy of Sciences, have used their method to estimate how the proportion of elderly people in Germany, Japan and the United States will change in the future.
The average German was 39.9 years old in 2000 and could plan to live for another 39.2 years, according to research reported in the journal Nature on Wednesday.
However, by 2050 the average German will be 51.9 years old and will be expected to live another 37.1 years. So middle age in 2050 would occur at around 52 years instead of 40 years as in 2000.
"As people have more and more years to live they have to save more and plan more and they effectively are behaving as if they were younger," said Sanderson.
Five years ago, the average American was 35.3 years old and could plan for 43.5 more years of life. By 2050, the researchers estimate it will increase to 41.7 years and 45.8 future years.
"A lot of our ski/Is, our education, our savings and the way we dear with our health care depend a great deal on how many years we have to live," said Sanderson.
This dimension of how many years people have to live has been completely ignored in the discussion of aging so far.
第36题：People 40 years of age today seem to be as young as
A．their parents were at the same age.
B．their parents were at the age of 30.
C．their children will be at the same age.
D．their children will be at the age of 30.
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In his novels, Hawthorne had scientists anddoctors pictured unfavorably, among whom, ___, the antagonist in the scarlet letter, seemed to be a nasty villain.
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Since the early 1980s, scientists have revealed some 40 human genes involved in cancer. These genes are essential for normal growth, but can be subverted to cause a tumor.
Dr. Jorge Yunis of the University of Minnesota Medical School in Minneapolis has found that 70 percent of oncogenes, or cancer-causing genes, are located near inherited weak points on chromosomes(染色体). Varying from individual to individual, vulnerable to chemical carcinogens(致癌剂), X rays and other cancer-inducing agents.
"If a chromosome snaps apart in the immediate vicinity of an oncogene," says Yunis, "normal genetic control mechanisms could break down and the stage would be set for the formation of cancer." Younis has shown that such a sequence occurs at the beginning of numerous leukemias (白血病), lymphomas(淋巴瘤) and some tumors of the lung, colon(结肠) and breast.
Yunis and other investigators have found that petroleum-based products--notably pesticides and insecticides-damage specific sites on at least two of the 23 pairs of human chromosomes that carry genetic information. Similarly, tobacco smoke tends to attack a part of another chromosome.
From paragraph 1, we know that some 40 genes involving in cancer are ______. ()
A．harmful to the human body
B．necessary to the human body
C．the elements that form. cancer
D．useless to the human body
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Scientists have many theories about how the universe _____ into being.
A cameB was comingC had comeD would come
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The use of nuclear power has already spread all over the world.（1）, scientists still have not agreed（2）what should be done with the large amounts of waste material that（3）to increase every year. Most waste materials are（4）of simply by placing them somewhere. But nuclear waste must be（5）with great care. It（6）dangerous radiation and it will continue to be（7）for hundreds, thousands, even millions of years.
How should we get（8）of such waste material in such a way（9）it will not harm the（10）？ Where can we（11）distribute it？ One idea is to put this radioactive waste inside a thick container, which is（12）dropped to the deep bottom of the ocean.（13）some scientists believe that this way of（14）nuclear waste could kill fish and other living things in the oceans or interfere（15）their growth. Another way to（16）nuclear waste is to send it into space, to the sun,（17）it would be burned. Other scientists suggest that this polluting material be（18）thousands of meters under the earth’s surface. Such underground areas must be free（19）possible earthquakes. Advances are being made. But it may still be many years（20）this problem could be finally settled.
1. A .Moreover B However C Therefore D Otherwise
2. A .on
B. with
C. to
D. in
3. A. incline
B. start
C. tend
D. keep
4. A .drained
B. dumped
C. discharged
D. disposed
5. A .dealt
B. handled
C. coped
D. processed
6. A .drops off
B. gives off
C. leaves off
D. sets off
7. A .efficient
B. unfavorable
C. deadly
D. painful
8. A. touch
B. hold
C. grasp
D. rid
9. A. so
B. which
C. that
D. thus
10. A. environment
B. situation
C. location
D. residence
11. A .reasonably
B. rationally
C. regularly
D. safely
12. A .then
B. even
C. ever
D. only
13. A .And
B. But
C. Still
D. Thereby
14. A. scattering
B. preserving
C. containing
D. discarding
15. A. in
B. with
C. against
D. at
16. A. remove
B. deliver
C. transport
D. spread
17. A. where
B. when
C. there
D. while
18. A. covered
B. deposited
C. buried
D. reserved
19. A. from
B.of
C. for
D. about
20. A. until
B. after
C. before
D. unless
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Scientists now believe that artificial-hip implants, previously thought to be safe, may actually increase the risk of cancer in recipients after about 45 years of use. Though these implants do improve the quality of recipients lives, the increased risk of cancer is an unacceptable price to pay for these improvements. Therefore, they should be banned. Which of the following, if true, is the strongest counterargument to the argument above？
A．Artificial-hip implant surgery can cause severe complications, such as infection, chronic fever, and bone degeneration, and these complications can themselves be crippling or even fatal.
B．Almost all artificial-hip implant recipients receive their implants at an age when they are unlikely to live more than an additional 30 years.
C．Although artificial-hip implants increase the risk of cancer after about 45 years of use, a few of the cancers they induce are not fatal.
D．Since artificial-hip implants are not very common, banning them would cause little hardship.
E．Although the benefits of artificial-hip implant surgery have remained substantially the same over the past decade, the price of the surgery has risen considerably.
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Within ten yers scientists will probbly hve ___________{the nucleus ofWithin ten yers scientists will probbly hve ___________{the nucleus of cell B．cloned humn beings C． humn being in two yers D． lw to bn humn cloning E． report on humn cloning F．hevy medi coverge
A．the nucleus of a cell
B．cloned human beings
C．a human being in two years
D．a law to ban human cloning
E．a report on human cloning
F．heavy media coverage
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Techers should be _____ with their students but should not be _____ on them.hrd; strictB．str50. Techers should be _____ with their students but should not be _____ on them.hrd; strict B．strict; hrd C．hrdly; strictly D．strictly; hrdly
A．hard; strict
B．strict; hard
C．hardly; strictly
D．strictly; hardly
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Scientists think a fidgeting habit to be ______（）
A．a way to lose fat
B．a nervous habit annoying the people around
C．a better kind of exercise than slow running
D．a habit of thin people
