南方沿海航线的中心是：[ ] A．广州、香港 B．广州、海口 C．汕头、厦门 D

Going on holiday not only makes you feel good while you’re there, you also gain the health benefits for months, new research shows．

Jetting off to destinations such as the Maldives cuts your blood pressure, helps you sleep better and bounce back from stress, it found．The benefits last at least a fortnight longer than the vacation and can be felt for months in some cases where it is claimed．Experts say workers should always take their full holiday entitlement（权利）each year, but as many as one in three don’t．

The study compared key health markers in holidaymakers visiting Thailand, Peru or the Maldives, with people who stayed at home and continued working．The average blood pressure of those on holiday dropped by six percent while the workers saw their blood pressure rise by two percent over the same period．The sleep quality of holidaymakers improved by 17 percent while that of the non-holidaymakers deteriorated by 14 percent．

The study also found the ability of vacationers to recover from stress, known as the stress-resilience test improved by 29 percent．There was a 71 percent fall in stress resilience scores among workers．Tests showed a fall in blood glucose levels, reducing the risk of diabetes （糖尿病）, trimmer waistlines and improved mood and energy levels, with the effects sustained for at least two weeks after returning home．

The Holiday Health Experiment was conducted by tour operator Kuoni and Nuffield Health, the UK’s largest healthcare charity．

小题1:According to the passage, how many people go on holiday?

A．Two thirds．

B．One third．

C．17 percent．

D．A quarter．小题2:Which of the following can we infer from the passage?

A．The further you go, the better you get the benefits．

B．Most people like to stay at home during the holiday．

C．The result of the study is mostly based on the description from the people involved．

D．Holiday makers are more adaptable than non-holidaymakers．小题3:The author intends to tell us that ________．

A．we have to go on holiday as much as possible

B．you’ll certainly get depressed if you don’t go on holiday

C．we had better go on holiday for the benefits of health

D．it is best to go to foreign countries like Maldives小题4:The best title of the passage is ________．

A．A Holiday Health Experiment

B．Health Benefits from Holiday

C．Health Problems of Having Holiday

D．Key Health Markers in Holidaymakers

阴狐疝气者，（），时时上下，蜘蛛散主之。

关于参与性观察的特点，描述最恰当的是（）

A.结果可以重复

B.结果可以外推

C.能够翔实准确地获得第一手资料

D.需要的时间短

E.结果不受主观因素影响

影响文件系统可靠性因素之一是文件系统的一致性问题，如果读取 (43) 的某磁盘块，修改后在写回磁盘前系统崩溃，则对系统的影响相对较大。通常的解决方案是采用文件系统的一致性检查，一致性检查包括块的一致性检查和文件的一致性检查。在块的一致性检查时，检测程序构造一张表，表中为每个块设立两个计数器，一个跟踪该块在文件中出现的次数，一个跟踪该块在空闲表中出现的次数。若系统有16个块，检测程序通过检测发现表 (44) 状态下的文件系统是一致的。

A．用户文件的某磁盘块

B．空闲表磁盘块

C．用户目录文件

D．系统目录文件

影响环境人口容量的首要因素是（）

A.资源丰富程度

B.科技水平

C.对外开放程度

D.消费水平