He could not _____ his tears on hearing that he was not admitted to the university.A. hold upB. hold backC. get overD. get through

According to the passage, which of the following statements is NOT TRUE?A. The national monument in Hawaii was created by President Bush.B. There is no objection to President Obama's decision.C. President Obama made this decision on his own.D. The establishment of the new monument will lead to new iobs.

引入动物的隔离舍可与生产区共用通风、排污设施，无需独立设置。() The quarantine house for introduced animals may share ventilation and sewage facilities with the production area and does not require separate facilities.()A. 正确B. 错误

- Will you go on a picnic with us tomorrow?____.A. Yes, but I'll have English classesB. Sorry, I have an appointment with Dr. BrownC. I'm afraid I have no idea

【单选题】Which of the following belongs to the methods that Google motivates its employees?A. Providing haircuts at a discounted price.B. Shuttling the founders between home and office.C. Offering entertaining equipment in the workplace.

8.(单选题)The computers on the table( ) Professor Smith.A. belongsB. are belonged toC. belongs toD. belong to

What is the single most effective way to reduce greenhouse-gas emissions？ Go vegetarian？ Replant theAmazon？ Cycle to work？ None of the above． The answer is： make air-conditioners radically better． On one calculation， replacing refrigerants(制冷剂) that damage the atmosphere would reduce total greenhouse gases by the equivalent of 90bn tons of CO2 by 2050． Making the units more energy-efficient could double that． Air-conditioning is one of the world's great overlooked industries． Automobiles and air-conditioners were invented at roughly the same time， and both have had a huge impact on where people live and work． Unlike cars， though， air-conditioners have drawn little criticism for their social impact， emissions or energy efficiency． Most hot countries do not have rules to govern their energy use． Yet air-conditioning has done quite a lot of things to benefit humankind． It has transformed productivity in the tropics and helped turn southern China into the workshop of the world． In Europe，its spread has pushed down heat-related deaths ten times less than what it was in 2003， when around 70，000 people， most of them elderly， died in a heatwave． For children， air-conditioned classrooms and dormitories are associated with better grades at school． Environmentalists who call air-conditioning "a luxury we cannot afford" have half a point， however． In the next ten years， as many air-conditioners will be installed around the world as were put in between1902(when air-conditioning was invented)and 2005． Until energy can be produced without carbon emissions， these extra machines will warm the world． At the moment， therefore， air-conditioners create a vicious cycle． The more the Earth warms， the more people need them． But the more there are， the warmer the world will be． Cutting the impact of cooling requires three things(beyond turning up the thermostat(温度调节器)tomake rooms less Arctic)． First， air-conditioners must become much more efficient． The most energy-efficient models on the market today consume only about one-third as much electricity as average ones． Minimum energy-performance standards need to be raised，or introduced in countries that lack them altogether， to push the average unit's performance closer to the standard of the best． Next，manufactures should stop using damaging refrigerants．One category of these，hydrofluorocarbons， is over 1，000 times worse than carbon dioxide when it comes to trapping heat in the atmosphere． An international deal to phase out these pollutants， called the Kigali amendment， will come into force in 2019． Foot-draggers should approve and implement it；America is one country that has not done so． Last， more could be done to design offices， malls and even cities so they do not need as many air- conditioners in the first place． More buildings should be built with overhanging roofs or balconies for shade，or with natural air-circulation． Simply painting roofs white can help keep temperatures down． Better machines are necessary． But cooling as an overall system needs to be improved if air-conditioners is to fulfill its promise to make people healthier，wealthier and wiser， without too high an environmental cost． Providing indoor shelters of air-conditioned comfort need not come at the expense of an overheating world．(1)Why does the author think air-conditioning is an overlooked industry？___A． Because many hot countries haven't put the energy-controlling rules into force．B． Because it has caused the same impact on people's life and work as automobiles have．C． Because it has brought great economic， physical， and educational benefits to humans．D． Because it doesn't get the due criticism for its environmental impact as automobiles do．(2)What can we learn from Paragraph 4？___A． The price of air-conditioning will go up due to the large demand for it．B． A high environmental cost will come along with the air-conditioning service．C． Environmentalists are expecting extra machines which can warm the world．D． Governments partially agree that air-conditioning is a luxury we cannot afford．(3)With regard to the measures to cut the impact of cooling， which of the following statements is TRUE？___A． Manufacturers should only stop using hydrofluorocarbons．B． People should avoid turning up the air-conditioners to have cool rooms on hot days．C． People should adopt more environmentally-friendly materials when designing buildings．D． Governments should give a green light to the agreement on eliminating the pollutants．(4)The author writes this passage to___．A． arouse people's attention to the global warmingB． appeal for the global joint efforts to combat global warmingC． give credit to air-conditioning for its great contributions to humansD． offer a new perspective on how to reduce greenhouse gases emissions

The Internet affords anonymity to its users, a blessing to privacy and freedom of speech. But that very anonymity is also behind the explosion of cyber-crime that has (1) across the Web. Can privacy be preserved (2) bringing safety and security to a world that seems increasingly (3) ? Last month, Howard Schmidt, the nation"s cyber-czar, offered the federal government a (4) to make the Web a safer place a "voluntary trusted identity" system that would be the high-tech (5) of a physical key, a fingerprint and a photo ID card, all rolled (6) one. The system might use a smart identity card, or a digital credential (7) to a specific computer, and would authenticate users at a range of online services. The idea is to (8) a federation of private online identity systems. User could (9) which system to join, and only registered users whose identities have been authenticated could navigate those systems. The approach contrasts with one that would require an Internet driver"s license (10) by the government. Google and Microsoft are among companies that already have these "single sign-on" systems that make it possible for users to (11) just once but use many different services. (12) , the approach would create a "walled garden" cyberspace, with safe "neighborhoods" and bright "streetlights" to establish a sense of a (13) community. Mr. Schmidt described it as a "voluntary ecosystem" in which "individuals and organizations can complete online transactions with (14) ,trusting the identities of each other and the identities of the infrastructrue (15) which the transaction runs". Still, the administration"s plan has (16) privacy rights activists. Some applaud the approach; others are concerned. It seems clear that such a scheme is an initiative push toward what would (17) be a compulsory Internet "drive"s license" mentality. The plan has also been greeted with (18) by some computer security experts, who worry that the "voluntary ecosystem" envisioned by Mr. Schmidt would still leave much of the Internet (19) . They argue that all Internet users should be (20) to register and identify themselves, in the same way that drivers must be licensed to drive on public roads.(1)A．sweptB．skippedC．walkedD．ridden

9. Some celebrities star in a new video to underline(disclose) the causes of the plastics crisis.A. 关闭B. 揭露C. 发现D. 抛弃

Virtual (虚拟) Teams Virtual teams are a great way to enable teamwork in situations where people are not sitting in the same office at the same time. 71 This is particularly so for businesses that use virtual teams to build global presence, or need less common skills or knowledge from people who are unwilling to travel. Virtual teams are governed by the same basic principles as traditional teams. 72 It is the way the team members communicate. They rely on special communication channels enabled by modern technologies, such as emails, faxes, and teleconferences, and alike. Due to more limited communication channels, the success of virtual teams is much more sensitive to the type of project the group works on, what people are selected, and how the team is managed. 73 One challenging case is the projects that rely heavily on integrated work. That is to say, when each person's work depends significantly on what someone else is doing at the same moment, like in a sports team, there is an ongoing heavy exchange of information in real time, and the tasks have to go through a strict order within a short time. Not everyone can perform well in a virtual team environment. 74 Another important quality is communication skills. The team members must be able to communicate clearly and positively. Managers of virtual teams need to pay much more attention to having clear goals, performance standards, and communication rules. People have various assumptions on what to expect from each other. 75 One of the biggest challenges of virtual teams is building trust between the team members. Trust is important for unblocking communication between members and increasing motivation of each person in the team. The issue of trust needs special attention at any stage of team existence. 1. 71 A: Yet, there is one significant difference. B: Not every type of project is suitable for a virtual team. C: A virtual team can choose whatever project they like to work on. D: The members must be self-motivated and able to work independently. E: Such teams are now widely used by companies and organizations to cut business costs. F: Members of virtual teams communicate quite well although they never meet face-to-face. G: To avoid misunderstanding, clear rules that everyone understands and agrees on are necessary. 2. 72 A: Yet, there is one significant difference. B: Not every type of project is suitable for a virtual team. C: A virtual team can choose whatever project they like to work on. D: The members must be self-motivated and able to work independently. E: Such teams are now widely used by companies and organizations to cut business costs. F: Members of virtual teams communicate quite well although they never meet face-to-face. G: To avoid misunderstanding, clear rules that everyone understands and agrees on are necessary. 3. 73 A: Yet, there is one significant difference. B: Not every type of project is suitable for a virtual team. C: A virtual team can choose whatever project they like to work on. D: The members must be self-motivated and able to work independently. E: Such teams are now widely used by companies and organizations to cut business costs. F: Members of virtual teams communicate quite well although they never meet face-to-face. G: To avoid misunderstanding, clear rules that everyone understands and agrees on are necessary. 4. 74 A: Yet, there is one significant difference. B: Not every type of project is suitable for a virtual team. C: A virtual team can choose whatever project they like to work on. D: The members must be self-motivated and able to work independently. E: Such teams are now widely used by companies and organizations to cut business costs. F: Members of virtual teams communicate quite well although they never meet face-to-face. G: To avoid misunderstanding, clear rules that everyone understands and agrees on are necessary. 5. 75 A: Yet, there is one significant difference. B: Not every type of project is suitable for a virtual team. C: A virtual team can choose whatever project they like to work on. D: The members must be self-motivated and able to work independently. E: Such teams are now widely used by companies and organizations to cut business costs. F: Members of virtual teams communicate quite well although they never meet face-to-face. G: To avoid misunderstanding, clear rules that everyone understands and agrees on are necessary.