单选题 Questions14-16 are based on the passage you have just heard.

单选题Too much ______ to X-rays can cause skin burns, cancer or other damage to the body.

单选题In last year's Science study, researchers at Johns Hopkins University examined the relationship between stem-cell divisions and cancer development. They reported that the higher the number of stem-cell divisions in a given tissue, the higher risk for 28 cancer. At the time, they said that their findings suggested '65% of cancer...appears to be explained by the number of stem-cell divisions'. That stem-cell activity, the researchers suggested, could explain why some people without 29 factors like smoking will still get lung cancers. 'I was startled by their conclusion,' Dr. Yusuf Hannun says, a cancer researcher at Stony Brook University in New York and author of the new Nature study. Hannun and his team 30 that the first study assumed that stem-cell division and other environmental factors were 31 of each other. Hannun's team wanted to assess the 32 to which stem-cell division or environmental factors contribute to developing the disease. To do this, the researchers looked at a variety of data including epidemiological evidence that people living in different regions have different rates of cancer development. They also looked at cell-mutation patterns 33 with certain cancers, as well as mathematical models that helped parse how much a cancer was due to 34 factors like cell division versus extrinsic factors like environment or lifestyle. The new study reported that while intrinsic factors did have a 35 in cancer development, environmental factors had a more 36 effect and were responsible for 70%-90% of cancer cases. This isn't the last study to be published on the topic, but as scientists refine their 37 of the many things that can contribute to cancer risk, more information is needed. A. argue B. associated C. considering D. derived E. developing F. extent G. full H. independent I. intrinsic J. relation K. risk L. robust M. role N. seizes O. understanding

单选题Hardly anything ______ more than the happiness of seeing someone using his device for treatment. A. please him B. does please him C. pleases him D. does him please

单选题This one is ______ the most reasonable of all the projects proposed.

单选题In fresco painting to what is the paint applied?

单选题The puritan army executed the king, abolished the House of Lords, got the House of Commons to ______ England a "commonwealth", or republic.

单选题I waited for him half an hour, but he never ______.

单选题Now ways are found ______ these materials out of the rubbish and use them again. A. for taking B. to have taken C. to take D. taking

单选题A: I have two tickets for tonight's concert. Could you go with me? B: I'd like to, but I'm busy tonight. A: ______.

单选题How is virtual reality surgery performed?

单选题The doctor pondered for a while, trying to recall which of several medications would be best to ______ the patient's suffering.

单选题Piano is a popular ______.

单选题 Cheating in GCSE and A-Levels by pupils, teachers and even school exam centres rose markedly last year, with ever more sophisticated electronic gadgets being smuggled into exam halls. The number of teenagers found guilty of cheating rose by 6.2% to 4,415 during last summer's exams. But not only pupils were at it—the number of teachers disciplined for test 'malpractice' was 30% higher than the year before. A breakdown of figures from the Office of the Qualifications and Exams Regulator (Ofqual) showed that the most common form of cheating was 'bringing a mobile phone or other electronic gadget' into the room. Some candidates were caught with concealed earpieces, described as 'exam cheat equipment' on some of the websites that sell them, which could receive information from outside an exam hall. Exam bosses admitted that these were more difficult to detect, although many schools now use mobile tracking devices to detect whether a signal is being sent from anywhere in the room. The second most common cause of malpractice was plagiarism (剽窃) or copying other students' work, which accounted for 1084 cases. Disruptive behavior in the exam room, including swearing (讲脏话), rose from 514 cases in 2008 to 539 last year. Candidates were also docked marks for including offensive and obscene comments in their exam papers. In total, 2,155 students lost marks after being found guilty, 644 failed their exams and 1,616 escaped with warnings. 'Candidates who bring a mobile phone into an exam room but do not have the phone at their desk might receive a warning, whereas candidates found using a mobile phone during an exam might be disqualified from the unit or qualification in the current exam series a spokesman for Ofqual explained. The number of teachers disciplined rose from 68 to 88, and 17 were suspended from invigilating (监考) in exams. Their crimes include leaving the exam hall unsupervised and helping candidates to answer questions. Ofqual stressed that the figures confirmed that only 0.03% of pupils cheated in exams taken last summer. However, Jim Sinclair, director of the Joint Council for Qualifications, the organization which represents the examination boards, said it took a 'zero tolerance' approach to all forms of cheating, including the possession of unauthorized items such as mobile phones, iPods and other digital music players. Mick Brookes, of the National Association of Head Teachers, said he did not condone cheating but pointed out that children knew some exams were 'extremely high stakes' and schools were under more pressure to succeed. 'Young people are in a highly pressurized environment, partly due to the jobs market being more difficult than it was, and university entrance being restricted,' he added.

单选题When her neighbor Grandma Wang became iii, the girl often ______ .

单选题The other distinguishing trait of the law is ______.

单选题How long have you______ this story book?

单选题They hit only the smaller people like me, while the politicians will of course ______it with money. A. do away with B. take away with C. make away with D. get away with

单选题Although the colonists ______ to some extent with the native Americans, the latter's influence on American culture and language was not extensive.