问题 选择题

下图为人体对体温与水平衡的调节的示意图,①~⑤表示有关激素。下列叙述正确的是

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A.处于寒冷环境中,①②③④均增加

B.反射弧的效应器中只有肾上腺而没有其它

C.可以作为下丘脑分泌激素作用的靶器官有:肾上腺和甲状腺

D.⑤的释放量与皮肤的功能无关,与渗透压有关

答案

答案:A

填空题

阅读材料回答问题。

材料一:随着我国工业化和城镇化加速,耕地面积有缩小趋势,加上国际上一些发达国家把粮食加工产业当作一个绿色能源产业加以发展,粮食需求量在不断扩大;同时近两年农业生产资料价格上涨等因素,致使我国粮食及其农副产品价格不断攀升。2008年11月14日,我国首个《国家粮食安全中长期规划纲要(2008-2020年)》发布。《纲要》介绍了保障粮食安全的8大主要政策和措施:强化粮食安全责任;严格保护生产资源;加强农业科技支撑;加大支持投入力度;健全粮食宏观调控;引导科学节约用粮;推进粮食法制建设;制定落实专项规划。

材料二:保障粮食安全不仅要开源而且要节流。“开源”是指增加和保持一定的粮食生产能力,使粮食供求大体平衡;“节流”是指生产的粮食通过低成本的储藏——运输——加工,保质保量地投放市场满足相关需求。

用矛盾对立统一的观点分析“开源”与“节流” 的辩证关系。(10分)

材料三:联合国粮食及农业组织发布的报告显示,2008年上半年,国际市场小麦和大米的价格与一年前相比已经翻了一倍,玉米的价格也上涨了1/3。受此影响,2007年世界最贫困国家的粮食进口费用较前一年增加了37%,而2008年将在此基础上进一步上涨56%,飙升的粮价已导致37个国家正面临粮食危机。我国政府提出,加强国际合作,利用国际市场,加强进出口调节,这是做好国内粮食市场调控、实现粮食供需平衡目标的重要手段。

(1)结合材料一,从价格与供求的关系角度,说明政府应该如何正确保障粮食安全?(10分)

(2)联系材料二,用矛盾对立统一的观点分析“开源”与“节流” 的辩证关系。(10分)(3)结合材料三,运用国际社会的知识,阐述在粮食安全问题上,我国政府强调加强国际合作的原因。(12分)

阅读理解

The use of cars is becoming more and more popular in the twentieth century. A large number of the world's population are now able to buy and use cars.

Having a car gives much mobility(活动余地), enabling the driver to move around freely. The owner of a car is no longer forced to depend on public transport(公共交通)and doesn't, therefore, have to work in a place near his home. Instead, he can choose from a greater variety of jobs and he could change his job frequently.

Travelling to work by car is also more comfortable than having to use public transport; the driver can use the heating in winter and the air conditioning in summer to meet his own need and preference. There is no discomfort caused by waiting for

buses, trains or underground trains etc. With the building of good fast motorways long distances can be covered rapidly and pleasantly. Also, for the first time in the century, many people are able to enjoy their free time to the full by making trips to the countryside or seaside at weekends. This feeling of independence and the freedom to go wherever you please is perhaps the greatest advantage(优势)of the car.

1. What does the writer think of the public transport?

A. It gives less mobility           B. It is not comfortable at all

C. It enables a variety of jobs       D. It is becoming more popular than before

2. Traveling by bus may be ______.

A. less comfortable than by underground train 

B. more comfortable than by other transport

C. less comfortable than by other public transport  

D. less comfortable than by car

3. What does the underlined word mean?

A. from time to time            B. with difficulty   

C. against his own will         D. never

4. What does the writer think of having a car of your own?

A. It offers lots of advantages.        B. It has lots of independence.

C. It gives the feeling of freedom.     D. It offers free trips.