狭义上的国际劳动立法，主要指（）。A．国际劳工组织章程 B．国际劳工 * * C．国际劳

（2008年）我国《刑法》第二十一条规定，为了使国家、公共利益、本人或者他人的人身、财产和其他权利免受正在发生的危险，不得已采取的紧急避险行为，造成损害的，不负刑事责任。紧急避险超过必要限度造成不应有的损害的，应当负刑事责任，但是应当减轻或者免除处罚。该条文中的价值平衡，适用的是下列哪一项原则？

A．价值位阶原则

B．个案平衡原则

C．比例原则

D．功利原则

健康相关行为是指（）。

A.个体与健康有关的行为

B.个体与健康和疾病有关的行为

C.个体或群体与健康有关的行为

D.个体或群体与健康和疾病有关的行为

E.个体或群体与健康或疾病有关的行为

Yawning sends out certain messages -either “Oh，this movie is so boring” or “I probably need to get some sleep”. But did you know that a yawn can also help your brain to cool down when it is overheated?

A new study, led by a research team at Princeton University, has indicated that yawning could be the brain’s natural way of regulating temperature. People yawn more often when the temperature outdoors is lower than their body temperature but are less likely to yawn when it is hotter outdoors, according to Sciencedaily. com.

The research team did an experiment on 160 people, 80 in summer and 80 in winter, to examine how often they yawned at different air temperatures. The study found that people yawned more often in winter than in summer. Scientists say that when the air temperature is lower outside the body, there is heat exchange between the overheated brain and the cool air. But when the air temperature is higher than or equal to the body, people are less likely to yawn because the hot air they breathe in will make the brain even hotter.

When people yawn, their jaw is also stretched，which increases blood flow and may also help cool the brain

The study showed that the amount someone yawned could be related to the amount of time they spent outside. The longer they spent outside in summer, the less they yawned. Nearly 40 percent of participants yawned within their first five minutes outside, but after that the percentage was reduced to less than 10 percent.

However, the result was the opposite in winter. The number of people who yawned increased when they spent more than five minutes outdoors. But the change was only slight compared to summertime.

According to Gallup, this is the first report to show that yawning frequencies change depending on season. This could help us to understand better the way our brains work. It may also help us understand the reason why frequent yawning can sometimes be a sign of brain disease.

小题1:The purpose of the experiment is ______.

A．to find the frequency of people’s yawning

B．to indicate brain can regulate temperature naturally

C．to prove people yawn in winter and in summer equally

D．to show the real reason why people yawn小题2:The information we get from Paragraphs 5 and 6 is that ______.

A．longer outdoor summertime results in more yawns

B．yawning frequency increases with outdoor time

C．yawning frequency changes with outdoor time

D．longer outdoor wintertime leads to fewer yawns小题3:Acorrding to the text，people yawn more often ______.

A．when the air temperature is equal to the body

B．when the hot air breathed in makes the brain hotter

C．when the air temperature is higher than the body

D．when the air temperature is lower outside the body小题4:What could be the best title for the text?

A．Yawning Is A Sign of Brain Disease

B．Yawning Cools Your Brain

C．Yawning Benefits Your Body

D．Yawning Carries Some Information

客房计划卫生是指（）的清洁保养工作。

A、周期性

B、常规性

C、特别

D、短期性