1 . The bed should be reserved as a place for sleep，but people tend to read an iPad a lot in bed before they go to sleep．
Charles Czeisler，a professor at Harvard Medical School，and his colleagues got a small group of people for an experiment．For five days in a row，the people read either a paper book or an iPad for four hours before sleep．Their sleep patterns were monitored all night．Before and after each trial period，the people took hourly blood tests to paint a day-long picture of just how much melatonin（褪黑激素）was in their blood at any given time．
When subjects read on the iPad as compared to the paper books，they reported feeling less sleepy at night and less active the following morning．People also took longer to fall asleep on the iPad nights，and the blood tests showed that their melatonin secretion（分泌）was delayed by an hour and a half．
The researchers conclude in today's journal article that gives the rise of e-readers and the increasingly widespread use of e-things among children and adolescents，more research into the"long-term consequences of these devices on health and safety is urgently needed．"Czeisler and colleagues go on，in the research paper，to note"Reading an iPad in bed may increase cancer risk．"
However，software has been developed that can reduce some of the blue light from the screens of phones and computers according to time of day，and there are also glasses that are made to filter（过滤）short wavelengths．While they seem like a logical solution for the nighttime tech users，it needs more research．
1. In Charles Czeisler's experiment，all the subjects were asked to ______ ．| A．sit in a row and receive the strict tests |
| B．have their sleep patterns observed all night |
| C．read a paper book and an iPad at the same time |
| D．have their blood tested per hour during the trial |
| A．feel less sleepy and tired in the day |
| B．fall asleep more easily after reading |
| C．have a lot more melatonin secretion |
| D．become less energetic the next morning |
| A．remove the blue light from your devices completely |
| B．help prevent eyes being harmed by short wavelength |
| C．weaken the harm done by doing nighttime e-reading |
| D．be used in all the e-things widely and safely |
| A．No e-reading in bed before sleep |
| B．New software for night e-readers |
| C．Wrong behaviors before bedtime |
| D．No games on iPad in bed． |
2 . Driving in Canada is similar to driving in many parts of the United States. Distances and speeds, however, are posted in kilometers per hour and some signs, particularly in Quebec, may only be in French.
Unless otherwise posted, the maximum speed limit in Canada is 50km/hr in cities and 80km/hr on highways. On rural highways, the posted speed limit may be 100km/hr. It is illegal to take automobile radar detectors into Quebec, Ontario, Manitoba, and the Yukon. Seat belt use is required by law for all passengers, and child car seats must be used by children under 40 pounds. Some provinces require drivers to keep their vehicles’ headlights on during the day and some have banned driving while using a hand-held cell phone. Motorcycles cannot share a lane, and safety helmets for motorcycle riders and passengers are necessary. Running a red light is a serious crime throughout Canada and drivers are advised to stop before starting when a light turns green.
Winter travel can be dangerous due to heavy snowfalls and icy conditions. Some roads and bridges are often closed in winter. Snow tires are required in some provinces. Travelers should also be careful about animals while driving at night in rural areas.
Highway 401, from Detroit to Montreal, is one of the busiest highways in North America. It has been the scene of many deadly traffic accidents due to sudden and severe weather changes, high rates of speed, and heavy truck traffic. Thus drivers should be alert while travelling here.
Please refer to our Road Safety page for more information. Also, we suggest that you visit the website of Canada’s national authority responsible for road safety.
1. Which of the following is TRUE according to the text?| A．All signs on the roads in Quebec are in English. |
| B．Automobile radar detectors are allowed to be used in Manitoba. |
| C．Passengers may choose not to wear seat belts while in a car in Canada. |
| D．The speed of cars in Canadian cities should be less than 50km/hr. |
| A．careful | B．relaxed | C．nervous | D．pleased |
| A．Different traffic rules in Canada | B．Tips for traveling by car in Canada |
| C．Special rules for driving in Canada | D．Traffic safety and road conditions in Canada |
3 . 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 Trevor et 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 |
| 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 |
| A．Job hunters. | B．Employees in blue-chip companies. |
| C．Mid-level managers. | D．Researchers on employee turnover. |
