试简单说明下列协议的作用：ARP和RARP。

“应怜屐齿印苍苔 ，小扣柴扉久不开。春色满园关不住，一枝红杏出墙来”这是我国宋朝中期著名诗人叶绍翁的《游园不值》。其中的“春色满园关不住，一枝红杏出墙来”这两句诗词中蕴藏了很多的生物学知识，请你试从生物学角度分析“红杏出墙”现象。

(1)“红杏出墙”是杏树受墙外阳光照射的刺激引起的，从这个意义说，红杏出墙表现了生物具有_____________的特征。

(2)杏树伸到墙外的枝条会开花结果，这反映了红杏具有________________的特征。

(3)杏树伸到墙外的枝条可以充分利用光照，把二氧化碳和水合成储存能力的有机物，并且释放出氧气，从这个意义上讲，红杏具有______________的特征。

(4)能够出墙的杏树是由一粒种子发育成成一棵小树，并由一棵小树长成参天大树，从这个意义上讲，红杏具有的______________特征。

(5)从杏树反应的以上各个特征来看，杏树应该属于生态系统中的______________部分。

前段时间达州大部分地方出现较长时间的干旱，气象部门实施人工降雨，用飞机在高空喷洒干冰，干冰进入云层后迅速      成为气体，并从周围吸收大量的热，空气温度急剧下降，使空气中水蒸气        成小冰晶，这些冰晶逐渐变大而下降，遇暖气后吸收热量而        为雨滴落到地面.（均填物态变化名称）

Everywhere man is altering the balance of nature．He is facilitating the spread of plants and animals into new regions, sometimes deliberately, sometimes unconsciously．He is covering huge areas with new kinds of plants, or with houses, factories, slag-heaps and other products of his civilization．He exterminates some species on a large scale, but favours the multiplication of others．In brief, he has done more in five thousand years to alter the biological aspect of the planet than has nature in five million．

Many of these changes which he has brought about have had unforeseen consequences．Who would have thought that the throwing away of a piece of Canadian waterweed would have caused half the waterways of Britain to be blocked for a decade, or that the provision of pot cacti for lonely settlers’ wives would have led to Eastern Australian being overrun with forests of Prickly Pear? Who would have prophesied that the cutting down of forests on the Adriatic coasts, or in parts of Central Africa, could have reduced the land to a semidesert, with the very soil washed away from the bare rock? Who would have thought that improved communications would have changed history by the spreading of disease-sleeping sickness into East Africa, measles into Oceania, very possibly malaria into ancient Greece?

These are spectacular examples; but examples on a smaller scale are everywhere to be found．We make a nature sanctuary for rare birds, prescribing absolute security for all species; and we may find that some common and hardy kind of bird multiplies beyond measure and ousts the rare kinds in which we were particularly interested．We see, owing to some little change brought about by civilization, the starling spread over the English country-side in hordes．We improve the yielding capacities of our cattle; and find that now they exhaust the pastures which sufficed for less exigent stock．

小题1:The following examples except ________ reflect man altering the balance of nature．

A．man is covering huge areas with new kinds of plants

B．man is facilitating the spread of animals into new regions．

C．man is killing some species on a large scale

D．man is getting to know the importance of keeping the balance of nature．小题2:What had a piece of Canadian waterweed cause?

A．Eastern Australian was overrun with forests．

B．Half the waterways of Britain blocked for a decade．

C．In parts of central Africa, the land reduced to a semidesert．

D．Disease-sleeping has been caused．小题3:What have spread diseases?

A．Disease-sleeping sickness．

B．Measles．

C．Improved communications．

D．Malaria．小题4:We make a nature sanctuary for rare birds but __________

A．some common and hardy kind of bird multiplies

B．rare kinds multiply

C．all bird multiply

D．no bird multiply小题5:The main idea of the passage is _________．

A．that man is deliberately destroying the balance of nature

B．that man has foreseen the consequences of altering the balance old nature

C．that improved communications have changed history

D．that man is altering the balance of nature

用柱分配层析-紫外分光光度法，检查乙酰水杨酸中水杨酸等杂质时，采用含有三氯化铁-尿素试液的硅藻土为固定相，用氯仿洗脱时（）

A、水杨酸被洗脱

B、乙酰水杨酸被洗脱

C、其中杂质被洗脱

D、尿素被洗脱

E、三氯化铁被洗脱

公司对科技成果转让是如何规定的？