单选题The mail was Udelayed/U for two days because of the snow-storm.

单选题The article sketched the major events of the decade.

单选题'Tweeting' Medics Expose Patients Medics (实习医生) posting messages on networking websites like Facebook and twitter are breaching patient confidentiality, a leading journal reveals. Research in the Journal of the American Medical Association found examples of web gossip by trainee doctors sharing private patient stories and details. Over half of 78 US medical schools studied had reported cases of students posting unprofessional content online. One in 10 of these contained frank violations of patient confidentiality. Most were blogs, including one on Facebook, containing enough clinical detail that patients could potentially be identified. Many postings included profanity and discriminatory language. Sexually suggestive material and photos showing drunkenness or illicit drug use were also commonplace. While most incidents resulted in informal warnings, some were deemed serious enough to lead to dismissal from medical school. But few of the medical schools had policies that covered online social networking and blogging. The investigators, led by Dr Katherine Chretien of the Washington DC VA Medical Center, said medical students may not be aware of how online posting can reflect negatively on medical professionalism or jeopardise their careers. Similarly, patient confidentiality breaches may be unintentional. "Sharing patient stories that are de-identified and respectful, as health professionals might do on personal blogs, can encourage reflection, empathy and understanding." "However, content may risk violation of patient privacy, even without using names or other identifiers, "they warned. Also, the line separating freedom of speech and inappropriate postings can be unclear—for example, derisive comments about a student's institution or profession might not be considered unprofessional by some, they said. Dr Chretien's team say medical students should be taught as part of their training about the risks associated with making postings on the Internet. As a matter of course, students should be shown how to elect privacy settings on social networking sites and should be told to perform periodic Web searches of their own name to vet listed online content. A spokesman for the British Medical Association said: "Patient confidentiality is paramount and medical students and doctors obviously need to be very careful about any information they post online. " The UK's regulator of doctors, the General Medical Council, does not have guidance that covers medics' blogging. But a spokeswoman advised doctors: " You must make sure that your conduct at all times justifies your patients' trust in you and the public's trust in the profession. /

单选题Materials such as clay, wax, glass, and rubber are widely used in industry today because they are {{U}}malleable{{/U}}.

单选题There is a Ulimited/U number of books on this subject in the library.

单选题Accordingly, a number of other methods have been employed.

单选题It took US a long time to{{U}} mend{{/U}} the house.

单选题He was so greatly attracted by the beauty of the Xixi Wetland that he decided to visit there again.

单选题In the last paragraph the word "persistent" means

单选题She could not answer, it was an {{U}}immense{{/U}} load off her heart.

单选题 下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。{{B}}第一篇{{/B}} {{B}}A Thirsty World{{/B}} The world is not only hungry; it is also thirsty for water. This seems strange to you, since nearly 75% of the earth's surface is covered with water. But about 97% of this huge amount is from sea water, or salt water. Man can only drink and use the other 3% — the fresh water that comes from rivers, lakes, underground, and other sources. And we cannot even use all of that, because some of it is in the form of iceberg (冰山) and glaciers (冰串). Even worse, some of it has been polluted. At the moment, this small amount of fresh water is still enough for us. However, our need for water is increasing rapidly. Only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage later on. A limited water supply would have a bad effect onagriculture and industry. In addition to stopping wasting our precious water, one useful step we should take is to develop ways of reusing it. Experiments have already been done in this field, but only on a small scale. Today, in most large cities tanks, water is used only once and it eventually returns to the sea or runs into underground storage tanks. But it is possible to pipe water that has been used to a purifying (净化) plant. There it can be filtered (过滤) and treated with chemicals so that it can be used again just as it were fresh from a spring. But even if every large city purified and reused its water, we still would not have enough. Where could we turn next? To the oceans! All we'd have to do to make use of the vast amount of sea-water is — remove the salt. This salt-removing process is already in use in many parts of the wodd.

单选题下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。 Inflation Business and government leaders also consider the inflation rate to be an important general indicator. Inflation is a period of increased spending that causes rapid rises in prices. {{U}}(51) {{/U}} your money buys fewer goods so that you get {{U}}(52) {{/U}} for the same amount of money as before, inflation is the problem. There is a general rise {{U}}(53) {{/U}} the price of goods and services. Your money buys less. Sometimes people describe inflation as a time when "a dollar is not worth a dollar anymore". Inflation is a problem for all consumers. People who live on a fixed income are hurt the {{U}}(54) {{/U}}. Retired people, for instance, cannot count on an increase in income as prices rise. Elderly people who do not work face serious problems in stretching their incomes to {{U}}(55) {{/U}} their needs in time of inflation. Retirement income {{U}}(56) {{/U}} any fixed income usually does not rise as fast as prices. Many retired people must cut their spending to {{U}}(57) {{/U}} rising prices. In many cases they must stop {{U}}(58) {{/U}} some necessary items, such as food and clothing. Even {{U}}(59) {{/U}} working people whose incomes are going up, inflation can be a problem. The {{U}}(60) {{/U}} of living goes up, too. People who work must have even more money to keep up their standard of living. Just buying the things they need costs more. When incomes do not keep {{U}}(61) {{/U}} with rising prices, the standard of living goes down. People may be earning the same amount of money, but they are not living as well because they are not able to buy as many goods and services. Government units gather information about prices in our economy and publish it as price indexes {{U}}(62) {{/U}} the rate of change can be determined. A price index measures changes in prices using the price for a {{U}}(63) {{/U}} year as the base. The base price is set at 100, and the other prices are reported as a {{U}}(64) {{/U}} of the base price. A price index makes {{U}}(65) {{/U}} possible to compare current prices of typical consumer goods, for example, with prices of the same goods in previous years.

单选题Last winter, she bought a pair of beautiful boots .

单选题We aim to increase the speed of delivery.

单选题In temperate regions the growth rings on turtles’ epidermal plates {{U}}reflect{{/U}} seasonal variations in growth.

单选题Many of novelist Carson McCullers' characters are Uisolated/U, disappointed people.

单选题The Mayan civilization flourished on the Yucatan peninsula of Mexico.A. profitedB. gainedC. benefitedD. prospered

单选题The weather turned to be very good, ______ was more than we could expect.A. whatB. whichC. thatD. it

单选题Our statistics show that we consume all that we are capable of producing.

单选题He has trouble understanding that other people judge him by his social skills and {{U}}conduct{{/U}}.