诊断糖耐量异常的指标是（） A.空腹血糖 B.糖基化血红蛋白 C.尿糖 D.胰岛素释

水溶解法销毁一般要求有2个场地。一是水溶解池，不需要太大的安全距离；二是残渣燃烧场地。溶解和燃烧地点都应当在野外相对空旷、水源丰富又不易污染水源的地方。在两处作业同时进行，两处距离应当在（）米以上。

A、50

B、100

C、150

D、200

实验室部分仪器或装置如图1所示，请回答下列问题

（l）写出指定仪器的名称：A______，B______．

（2）若要组装一套用过氧化氢制取氧气的发生和收集装置，可选择图1中的______．（填标号）某同学用该方法制取气体，观察到发生装置中产生大量气泡，收集了一段时间后，该同学把带火星的木条伸到瓶口、瓶中、瓶底，木条均没有复燃，可能的原因是______．

（3）若用氯酸钾制取氧气，你认为还需增加的仪器是______，写出用氯酸钾制取氧气的文字表达式：______．

（4）用图2所示装置收集氧气，氧气应从______（填“a”或“b”）端导入．

建筑材料采购保管人员的工资是在（）内。

A.企业管理费

B.措施项目费

C.材料费

D.人工费

A few years ago it was popular to speak of a generation gap, a disagreement between young people and their elders. Parents said that children did not show them proper respect and obedience, while children complained that their parents did not understand them at all. What had gone wrong Why had the generation gap suddenly appeared Actually the generation gap has been around for a long time. Many people argue that a gap is built into the fabric of our society.
One important cause of the generation gap is the chance that young people have to choose their own ways of life. In more traditional societies, when children grow up, they are expected to live in the same area as their parents, to marry people that their parents know and agree to, and to continue the family occupation. In our society, young people often travel great distances for their education, move out of the family home at an early age, marry or live with people whom their parents have never met, and choose occupations different from those of their parents.
In our easily changing society, parents often expect their children to do better than they did: to find better jobs, to make more money, and to do all the things that they were unable to do. Often, however, the p desire that parents have for their children are another cause of the disagreement between them. Often, they discover that they have very little in common with each other.
Finally, the speed at which changes take place in our society is another cause of the gap between the generations, In a traditional culture, elderly people revalued for their wisdom, but in our society the knowledge of a lifetime may become out of date overnight. The young and the old seem to live in two very different worlds, separated by different skills and abilities.
No doubt, the generation gap will continue to be a feature of American life for some time to come. Its causes are rooted in the freedom and changes in our society, and in the rapid speed at which society changes.

Which of the following statements is true according to the passage

A．Parents should be strict with their children.
B．The younger generation should value the older generation for their wisdom.
C．The generation gap is partly caused by the older generation.
D．The generation gap does not exist in American society.

原子是由原子核和质子组成的。（）