Complete the following passage by using the words in the box．Each word can only be used once．Note that there is one word more than you need．
| A．additional B．producing C．regular D．predicted E．identified E．atmosphere G．matched H．reducing I．carried J．increase |
Forests in the northern half of the globe could be growing faster now than they were 200 years ago as a result of climate change, according to a study of trees in eastern America．The trees appear to have faster growth rates due to longer growing seasons and higher concentrations （浓度） of carbon dioxide in the 1 ．
Geoffrey Parker, a scientist at the Smithsonian Environmental Research Centre in Edgewater．Maryland, said that the increase in the rate of growth was unexpected and might be 2 to the higher temperatures and longer growing seasons documented in the region．The growth may also be influenced by the significant 3 in atmospheric CO2,he said．
"We made a list of reasons these forests could be growing faster and then excluded half of them," Dr Parker said．Their study suggests that northern forests may become increasingly important in 4 the influence of man-made CO2 on the climate．
Dr Parker and his colleagues have 5 out a detailed record of the trees on a（n） 6 basis since 1987．They calculated that due to the global warming the forest is producing 7 tons of wood each year．
The scientists _ 8 _ the land with trees at different stages of growth and found that both young and old trees were showing increased growth rate．More than 90 per cent of the tree groups had grown by between two and four times faster than the scientists had 9 from estimates of the long-term rates of growth．
The following card includes a brief summary and a short assessment of a research paper．It can provide a guide for further reading on the topic．
| Trevor, C．O．, Lansford, B．and Black, J．W．, 2004, "Employee turnover （人事变更） and job performance: monitoring the influences of salary growth and promotion", Journal of Armchair Psychology, vol．113, no．1, pp．56-64． In this article Trevor et al．review the influences of pay and job opportunities in respect of job performance, turnover rates and employees' job attitude．The authors use data gained through organizational surveys of blue-chip companies in Vancouver, Canada to try to identify the main cause of employee turnover and whether it is linked to salary growth．Their research focuses on assessing a range of pay structures such as pay for performance and organizational reward plans．The article is useful as Trevoret al suggest that there are numerous reasons for employee turnover and a variety of differences in employees' job attitude and performance．The main limitation of the article is that the survey sample was restricted to mid-level management, thus the authors indicate that further, more extensive research needs to be undertaken to develop a more in-depth understanding of employee turnover and job performance．As this article was published in a professional journal, the findings can be considered reliable．It will be useful additional information for the research on pay structures． |
1．The research paper published is primarily concerned with
A．the way of preventing employee turnover
B．methods of improving employee performance
C．factors affecting employee turnover and performance
D．pay structures based on employee performance
2．As is mentioned in the card, the limitation of the research paper mainly lies in that ．
A．the data analysis is hardly reliable
B．the research sample is not wide enough
C．the findings are of no practical value
D．the research method is out-of-date
3．Who might be most interested in this piece of information?
A．Job hunters．
B．Employees in blue-chip companies．
C．Mid-level managers．
D．Researchers on employee turnover．
Read the following text and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need．
| A．Drug overuse and its consequence B．The problem of drug overuse in America C．Benefits of medicine and its wise use D．Female drug overuse with reference to that of males E．Misuse of medicine among the young generation F．Improper use of medicine among senior citizens |
1．
Nowadays．millions of people misuse and even overuse pain medications and other drugs．Research by the American National Institute on Drug Abuse （NIDA, 1999） shows that around 2% of the population over age 12 were using drugs non-medically．
2．
NIDA views medications as a powerful force for good in the contemporary world．They reduce and remove pain for millions of people suffering from illness and disease．They make it possible for doctors to perform complicated surgery to save lives．Many people afflicted by serious medical conditions are able to control their symptoms and become active, contributing citizens．NIDA points out that most individuals who take these drags use them in a responsible．
3．
Nevertheless．overuse of drugs such as opioids, central nervous system （CNS） depressants and stimulants does lead to harmful reliance in some people and is therefore becoming a serious public health concern．Although this abuse affects many people worldwide, particular trends of concern to the medical profession in the US appear among older adults, teenagers and women．
4．
Though it may be a surprise to many, the misuse of medications may be the most common form of drug abuse among the elderly．Dr Kenneth Schrader of Duke University, North Carolina states that although the elderly represent about 13% of the US population, those aged 65 and over account for the consumption of one third of all drugs．People in this age group use medications roughly three times more than the general population and have poorer compliance with instruction for use．In another study of elderly patients admitted to treatment programs, 70% were women who had overused medicines．
5．
Unfortunately, this trend among women does not only affect those aged over 65．In general, among women and men who are using either an anti-anxiety drug or a sedative, women are twice as likely to become addicted．In addition, statistics compiled for 12-17 year olds show that teenage girls are more likely than teenage boys to begin overusing psychotherapeutic medication such as painkillers, tranquillisers, stimulants and sedatives．