单词：microscopic dust analysis
单词：microscopic dust analysis 相关文章
My husband asked me to go to the post office to mail his resume in anticipation of a job interview. He instructed me to send it the fastest way possible. Struck by the urgency in his voice, I grabbed
英汉幽默故事选读
My teen-age daughter was preparing to return home after having visited her grandparents for a few weeks one summer. Her grandfather gave her 12 post cards .
英汉幽默故事选读
The 12 million Americans with sleep apnea stop breathing for short periods during the night, sometimes hundreds of times. Now a new study finds that a good motivator for some apnea sufferers to get treatment could be improved athletic performance. Be
Scientific American(十一)月
Study: Sleep Disorders Widespread Among Police A new study has found that four out of 10 North American police officers surveyed have some sort of sleep disorder. The researchers say the result can be impaired job performance, as well as a variety of
VOA标准英语2011年(十二月)
Chronic Obstructive Pulmonary Disease, known as COPD, is a life-threatening illness commonly brought on by years of smoking. The World Health Organization estimates that more than 200 million people have been diagnosed with the illness, and that most
VOA标准英语2010年(六)月
Snoring and Cognition 鼾声和认知能力 Snoring can be pretty disturbing to people who sleep in the company of snore rs , as well as to the snore r himself or herself, though she may not realize it. For instance, some snore rs have a condition ca
英语听力文摘 English Digest