参加国内外学术会议的参会要点包括（） A.成果突出、创新性强是参会的基础 B.提纲简

对跳远助跑的技术要求是（）、（）、（）、（）四字要诀。

我国把北京奥运会开幕日8月8日定为“全民健身日”，设立“全民健身日”表明公民的________受到重视。   [ ]

A、民主权利   

B、生命健康权　

C、受教育权　

D、休息权

Do you sleep well? Some people get off to sleep as soon as their head hits the pillow, but  many others are not so lucky. In fact, the lack of quality sleep has become a public health issue around the world. According to me World Association of Sleep Medicine, 45 percent of the world's population suffer from sleep problems. One in eight people don't sleep well and are easily woken. 7.6 percent sleep less than 3 hours each night. Some even cannot fall asleep for several days in a row.

As a basic bodily and mental need, sleep is essential for our survival, it helps us to fight diseases, strengthen our memory, perform better in work and school and improve our quality of life. Lack of sleep is known to have a significant negative influence on health, both in the short and long term. Poor sleep has been associated with obesity, diabetes, weakened immune systems and even some cancers, as well as depression and anxiety.

The World Sleep Day, held on the third Friday of March, is an annual celebration of sleep to lighten the burden of sleep problems through better prevention and management of sleep disorders.

To achieve this goal, we must figure out what causes sleepiness and sleeplessness.

Unhealthy lifestyle may be the first to blame. More and more people use cell phones and computers in bed, with many staying up until midnight. Modern technology does make our life convenient, but abuse of it ruins our health. Environmental conditions, such as temperature, noise, light, bed comfort also play an important Pole in one's ability to get proper sleep. Besides, improper evening diet, like a full or an empty stomach, coffee and alcohol all contribute to sleep problems. Of course, when it comes to causing poor sleep, stress from finances, family or work should never be ignored．

However, those who suffer from sleep disorders don't necessarily have to continue to do so -most sleep problems can be managed．

小题1:What can be inferred from Paragraph 1?

A．Nobody can stay awake for several days

B．Most people are going through sleep problems

C．Sleep problems have become a worldwide concern．

D．The majority of the world's population can't sleep well．小题2:Which of the following is not a direct cause of sleep problems?

A．Unhealthy lifestyle．

B．Modern technology．

C．Environmental conditions．

D．Work stress．小题3:What will be discussed in the paragraph that follows?

A．The harm of sleep problems．

B．Activities on the World Sleep Day．

C．Interviews of poor sleep sufferers．

D．Measures against sleep problems．小题4:Which best describes the author's attitude to sleep problem in the text?

A．Doubtful．

B．Disapproving．

C．Concerned．

D．Enthusiastic

下列微粒不能形成配位键的是 

A．Cu^2＋

B．NH₃

C．H^＋

D．NH

扩张型心肌病的主要体征是

A．第三心音
B．心房纤颤
C．第三心音奔马律
D．呼吸困难
E．心脏扩大