radioactive pharmaceuticals
radioactive pharmaceuticals
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根据下列材料请回答 31～35 题：CThe police fired tear gas and arrested more than 5,000 passively resisting protestors Friday in an attempt to break up the largest antinuclear demonstration ever staged in the United States. More than 135,000 demonstrators confronted the police on the construction site of a 1,000-megawatt nuclear power plant scheduled to provide power to most of southern New Hampshire. Organizers of the huge demonstration said that the protest was continuing despite the police actions. More demonstrators were arriving to keep up the pressure on state authorities to cancel the project. The demonstrator had charged that the project was unsafe in the densely populated area, would create thermal pollution in the bay, and had no acceptable means for disposing of its radioactive wasters. The demonstrations would go on until the jails and the courts were so overloaded that the state judicial system would collapse.Governor Stanforth Thumper insisted that there would be no reconsideration of the power project and no delay in its construction set for completion in three years. “This project will begin on time and the people of this state will begin to receive its benefits on schedule. Those who break the law in misguided attempts to sabotage the project will be dealt with according to the law,” he said. And the police called in reinforcements from all over the state to handle the disturbances.The protests began before dawn Friday when several thousand demonstrators broke through the police lines around the cordoned-off construction site. They carried placards that read “No Nukes is Good Nukes,” “Sunpower, Not Nuclear Power,” and “Stop Private Profits from Public Peril.” They defied police order to move from the area. Tear gas canisters fired by the police failed to dislodge the protestors who had been prepared with their own gas masks or facecloths. Finally the gas-masked and helmeted police charged into the crowd to drag off the demonstrators one by one. The protestors did not resist the police, but refused to walk away under their own power. Those arrested would be charged with unlawful assembly, trespassing, and disturbing the peace.第 31 题 What were the demonstrators protesting about?A． Private profits.B． The nuclear power station.C． The project of nuclear power construction.D． Public peril.
DBatteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.“To provide enough power, we need certain methods with high energy density(密度)”，said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanreal systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.71. Which of the following is true of Jae Kwon?A. He teaches chemistry at MU.B. He developed a chemical battery.C. He is working on a nuclear energy source.D. He made a breakthrough in computer engineering.
Liquid semiconductor is used to _________.A. get rid of the radioactive wasteB. test the power of nuclear batteries.C. decrease the size of nuclear batteriesD. reduce the damage to lattice structure.
___ man can now create radioactive elements, there is nothing he can do to reduce their radioactivity. A.WhileB.WhetherC.Now thatD.As
一名65岁男性患者，进行性吞咽困难3个月，现能进半流食，明显消瘦，乏力，门诊首选检查方法是A．Exfoliative cytoloSical examination of esopha- gusB．Barium radiography of esophagusC．Chest CT examinationD．EsophagoscopyE．32p radioactive isotope examination
一名46岁女性患者，因2年来下咽不畅，有时进食后呕吐来门诊就诊，食管钡餐x线造影仅见食管下段外压性狭窄，局部黏膜光滑完整，进一步确诊应作何种检查A．Exfoliative cytoloSical examination of esopha- gusB．Barium radiography of esophagusC．Chest CT examinationD．EsophagoscopyE．32p radioactive isotope examination
A package contains nitric acid solution and is radioactive．The radiation level at the package surface is 36 millirems per hour．How should this package be labeled ________．A.Radioactive II and oxidizerB.Radioactive II and poisonC.Radioactive I and corrosiveD.Fissile class I
The label required on containers carrying barium oxide for international shipment must read ______．A.Radioactive materialB.Spontaneously combustibleC.Keep away from foodD.Biomedical material
___________man can create radioactive elements, there is nothing he can do to reduce radioactivity.A.AsB.WhetherC.WhileD.Now that
Investment TipsBy Scott RussellInvesting in stocks that are less than $5 per share is a good way to boost your stock portfolio. Many big investors ignore these stocks because of the potential risks involved, however, these stocks often grow significantly over the course of time. Investing in inexpensive stocks is a wise move, provided that you hold on to them for at least one year to allow enough time for them to develop.Four stocks that I suggest for less than $5 per share are High Standard Pharmaceuticals Company, Nova Oil, Inc., Direct Access Publishing Group, and Peak Media Holdings. If you are new to the market, you might want to try investing in them through an online brokerage firm that does not charge a high commission for their services, and remember: only invest up to five percent of your entire stock portfolio in any stock, including these.------------------------------------------------------------------------------------------------------------------------------Quick Stock Quotes -- Thursday April 22 -- 2:40 P.M.(Quotes delayed by 20 minutes)Nova Oil, Inc. (NOI)3.93 +0.08 +2.08%Previous Close 3.85Open 3.87High 3.94Low 3.79Volume 864,300Bid 3.91Bid Size 600Ask 3.97Ask Size 3,30052 Week range 1.64-8.90What type of stocks is the article about?A. Oil company stocksB. Inexpensive stocksC. Pharmaceutical stocksD. Stocks from new companies
Investment TipsBy Scott RussellInvesting in stocks that are less than $5 per share is a good way to boost your stock portfolio. Many big investors ignore these stocks because of the potential risks involved, however, these stocks often grow significantly over the course of time. Investing in inexpensive stocks is a wise move, provided that you hold on to them for at least one year to allow enough time for them to develop.Four stocks that I suggest for less than $5 per share are High Standard Pharmaceuticals Company, Nova Oil, Inc., Direct Access Publishing Group, and Peak Media Holdings. If you are new to the market, you might want to try investing in them through an online brokerage firm that does not charge a high commission for their services, and remember: only invest up to five percent of your entire stock portfolio in any stock, including these.------------------------------------------------------------------------------------------------------------------------------Quick Stock Quotes -- Thursday April 22 -- 2:40 P.M.(Quotes delayed by 20 minutes)Nova Oil, Inc. (NOI)3.93 +0.08 +2.08%Previous Close 3.85Open 3.87High 3.94Low 3.79Volume 864,300Bid 3.91Bid Size 600Ask 3.97Ask Size 3,30052 Week range 1.64-8.90What company's stock is profiled?A. Nova Oil, Inc.B. Peak Media HoldingsC. Direct Access Publishing GroupD. High Standard Pharmaceuticals Company
Investment TipsBy Scott RussellInvesting in stocks that are less than $5 per share is a good way to boost your stock portfolio. Many big investors ignore these stocks because of the potential risks involved, however, these stocks often grow significantly over the course of time. Investing in inexpensive stocks is a wise move, provided that you hold on to them for at least one year to allow enough time for them to develop.Four stocks that I suggest for less than $5 per share are High Standard Pharmaceuticals Company, Nova Oil, Inc., Direct Access Publishing Group, and Peak Media Holdings. If you are new to the market, you might want to try investing in them through an online brokerage firm that does not charge a high commission for their services, and remember: only invest up to five percent of your entire stock portfolio in any stock, including these.------------------------------------------------------------------------------------------------------------------------------Quick Stock Quotes -- Thursday April 22 -- 2:40 P.M.(Quotes delayed by 20 minutes)Nova Oil, Inc. (NOI)3.93 +0.08 +2.08%Previous Close 3.85Open 3.87High 3.94Low 3.79Volume 864,300Bid 3.91Bid Size 600Ask 3.97Ask Size 3,30052 Week range 1.64-8.90Why does Mr. Russell say big investors ignore these stocks?A. They are risky.B. They are too popular.C. They often lose money rapidly.D. It is difficult to make money from them.
共用题干第一篇Human Heart can Make New CellsSolving a longstanding（为时甚久的）mystery, scientists have found that the human heart continues togenerate new cardiac（心脏的）cells throughout the life span, although the rate of new cell production slows with age.The finding,published in the April 3rd issue of Science,could open a new path for the treatment of heart diseases such as heart failure and heart attack,experts say."We find that the beating cells in the heart, cardiomyocytes（心肌细胞）,are renewed," said lead researcher Dr. Jonas Frisen,a professor of stem cell research at the Karolinska Institute in Stockholm,Sweden."It has previously not been known whether we were limited to the cardiomyocytes we were born with or whether they could be renewed,"he said."The process of renewing these cells changes over time,"Frisen added. In a 20-year-old,about 1percent of cardiomyocytes are exchanged each year , but the turnover（更替）rate decreases with age to only 0.45 percent by age 75."If we can understand how the generation of new cardiomyocytes is regulated,it may be potentially possible to develop pharmaceuticals（药物）that promote this process to stimulate regeneration after , for example,a heart attack,"Frisen said.That could lead to treatment that helps restore damaged hearts."A lot of people suffer from chronic heart failure,."noted co-author Dr. Ratan Bhardwaj,also from the Karolinska Institute."Chronic heart failure arises from heart cells dying," he said."With this finding,scientists are opening the door to potential therapies（疗法）,to having ourselves heal ourselves,"Bhardwaj said."Maybe one could devise a pharmaceutical agent that would make heart cells make new and more cells to overcome the problem they are facing."But barriers remain.According to Bhardwaj,scientists do not yet know how to increase heart cell production to a rate that would replace cells faster than they are dying off,especially in older patients with heart failure.In addition,the number of new cells the heart produces was estimated using healthy hearts一 whether the rate of cell turnover in diseased hearts is the same remains unknown.The human heart stops producing cardiac cells ______.A:when a person becomes oldB:as soon as a person gets sickC:immediately after a person is bornD:once a person dies
Which of the following，according to the passage，is a list of three natural sources of radiation？( ) A.Radioactive potassium in bone，strontium 90，uranium ore. B.Carbon 14 in tissues，cosmic rays，X rays. C.Cosmic rays，radioactive potassium in bones，radioactive carbon in tissues. D.X rays，carbon 14，plutonium.
1月1日，Esther Pharmaceuticals公司发行在外的普通股股数为10000股。6月1日，Esther公司为了获取现金额外发行了2000股普通股。全年共有5000股面值为$100、股利率为8%的不可转换优先股发行在外。Esther公司该年的净利润为$120000。则公司该年的每股收益为（）A、$7.16B、$8.06C、$7.56D、$8.16
You are the network administrator for Contoso Pharmaceuticals. Your network consists of a single Active Directory forest that contains three domains. The forest root domain is named contoso.com. The domain contains two child domains named usa.contoso.com and europe.contoso.com. The functional level of the forest is Windows Server 2003. Each domain contains two Windows Server 2003 domain controllers named DC1 and DC2. DC1 in the contoso.com domain performs the following two operations master roles: schema master and domain naming master. DC1 in each child domain performs the following three operations master roles: PDC emulator master, relative ID (RID) master, and infrastructure master. DC1 in each domain is also a global catalog server. The user account for Nancy Buchanan in the europe.contoso.com domain is a member of the Medicine Students security group. Because of a name change, the domain administrator of europe.contoso.com changes the Last name field of Nancy's useraccount from Buchanan to Anderson. The domain administrator of usa.contoso.com discovers that the user account for Nancy is still listed as Nancy Buchanan. You need to ensure that the user account for Nancy Anderson is correctly listed in the Medicine Students group. What should you do?（） A、 Transfer the PDC emulator master role from DC1 to DC2 in each domain.B、 Transfer the infrastructure master role from DC1 to DC2 in each domain.C、 Transfer the RID master role from DC1 to DC2 in each domain.D、 Transfer the schema master role from DC1 to DC2 in the contoso.com domain.
The article that can burn easily is（）A、inflammable articleB、flammable articleC、explosive articleD、radioactive article
单选题Only one of the following statements is false, according to what was said. Which one is it?AResearchers said estimates of atomic bomb survivors' radiation doses are accurate.BDoubts about the accuracy of methods used to collect exposure data in 1945 prompted the review.CThe earlier methods were unable to detect radioactive fallout because the researchers could not get close to the bomb site.DThe amount of nickel in each copper sample can be correlated to the intensity of radiation exposure at the site.
单选题1月1日，Esther Pharmaceuticals公司发行在外的普通股股数为10 000股。6月1日，Esther公司为了获取现金额外发行了 2 000股普通股。全年共有5 000股面值为$100、股利率为6%的不可转换优先股发行在外。Esther公司该年的净利润为$120 000。则公司该年的每股收益为（）。A $7.5B $8.06C $10D $10.75
单选题A package contains nitric acid solution and is radioactive. The radiation level at the package surface is 36 millirems per hour. How should this package be labeled? （）ARadioactive II and oxidizerBRadioactive II and poisonCRadioactive I and corrosiveDFissile class I
单选题1月1日，Esther Pharmaceuticals公司发行在外的普通股股数为10000股。6月1日，Esther公司为了获取现金额外发行了2000股普通股。全年共有5000股面值为$100、股利率为8%的不可转换优先股发行在外。Esther公司该年的净利润为$120000。则公司该年的每股收益为（）A$7.16B$8.06C$7.56D$8.16
单选题Nuclear power plants are some of the largest producers of ______ wastes, with each plant producing barrels of radioactive material that must be stored in special protective containers.AreasonableBspecialCdurableDhazardous
单选题Since man can now create radioactive elements, there is nothing he can do to reduce their radioactivity.AAsBWhetherCWhileDNow that