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2009年我国旱涝灾害频发。往年洪涝影响的省区如黑龙江、吉林、广西、湖南等地区，发生了罕见的旱情，一些地区因旱灾临时饮水困难。与此同时，淮河流域发生了流域性大洪水；西南、西北等地发生了山洪灾害。据此完成20～22题。 小题1:在我国，干旱与洪涝常相伴而生，其主要影响因素是( ) A．季风活动 B．地面状况 C．太阳辐射 D．置 小题2:若发生的旱涝程度大致相同，对下列地区造成的灾害损失最严重的是( ) A．长江中下游平原 B．东北平原 C．黄土高原 D．云贵高原 小题3:能快速有效地减轻上述自然灾害的措施是 ( ) A．建设水利工程 B．营造海防林 C．改进耕作制度 D．改进灌溉方法
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【单选题】New ice core samples taken from the centre of the Greenland ice-sheet have given a detailed record of the last 'interglacial (间冰期)' which rail from about 135,000 to 115,000 years ago. The cores, taken...
A.
The climate in recorded human history has generally remained stable.
B.
The climate from about 135,000 to 115,000 years ago was in a extremely cold state.
C.
The human race has been lucky to have enjoyed the most favorable period of climate for them to build a socio-economic system.
D.
The evidences scientists collected from the ice cores suggest that a civilization can not have arisen in the period from about 135,000 to 115,000.
【简答题】朗姆酒根据颜色的不同，主要可以分为哪几类？
【单选题】New ice core samples taken from the centre of the Greenland ice-sheet have given a detailed record of the last 'interglacial(间冰期)' which ran from about 135,000 to 115,000 years ago. The cores, taken f...
A.
The climate in recorded human history has generally remained stable.
B.
The climate from about 135,000 to 115,000 years ago was in a extremely cold state.
C.
The human race has been lucky to have enjoyed the most favorable period of climate for them to build a socio-economic system.
D.
The evidences scientists collected from the ice cores suggest that a civilization can not have arisen in the period from about 135,000 to 115,000.
【单选题】人们研究并利用植物的基因变异(variation)可以培育高产、优质的作物新品种。下列技术能产生基因变异的育种方式是（ ）
A.
袁隆平通过杂交技术培育出高产的超级稻。
B.
X射线进行大豆人工诱变育种，从诱变后代中选出抗病性强的优良品种。
C.
用杂交和人工染色体加倍技术，成功培育出抗逆能力强的八倍体小黑麦。
D.
把合成 β-胡萝卜素的有关基因转进水稻，育成可预防人类VA缺乏症的转基因水稻。
【单选题】下列微生物与染色法最佳搭配,哪一项是错误的?( )
A.
白喉杆菌-Neisser染色法
B.
钩端螺旋体-镀银染色法
C.
恙虫病-Giemsa染色法
D.
新型隐球菌-墨汁负染法
E.
结核杆菌-Gram染色法
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