单项选择题
1、 回答题
    It takes a long time to grow a tree．How long? Well, pine trees are the quickest growing trees, but still, they take twenty years to reach a size suitable for cutting and harvesting．An oak takes about sixty years to grow to a good size．A redwood may take hundreds of years．Lumber companies, which make their money on trees, depend on those that grow quickly．Therefore, they are always looking for methods to make trees grow faster．So far, the secret to fast growing trees seems to lie in " super-seeds．" These are seeds that are gathered from the quickest growing trees in a forest．One company searched 100,000 acres of trees and selected the seeds from just fifteen trees．These two ounces of seed were enough to plant several hundred new trees．Eventually, when these trees have grown, seeds will again be taken only from the fastest growing trees of crop．This process of artificial selection will yield, in the future, a super-tree that will grow in half the time it takes normal trees to develop．Unfortunately, it takes a long time for a plan like this to reach its goal．The Weyerhauser Lumber
    Corporation, which started its first collection of seed in 1958, is just now beginning to harvest the
    super-seeds of the first generation of the faster growing trees．

This selection centers on________
A．the life span of trees
B．the age of redwoods
C．making trees grow quickly
D．cutting trees for lumber


2、 某公司向银行借款500万元，将lo问厂房抵押给银行。银行对该10间房的抵押权是（　　）。
A．救济权
B．请求权
C．从权利
D．形成权


3、 甲、乙间订立赠与合同，甲将其房产一处赠与乙，并已做所有权移转登记，2个月后，乙与甲发生争执，将甲打伤致死。下列说法中正确的是（　　）。
A．甲、乙之间的赠与合同已履行，不能撤销、
B．甲的继承人可以撤销对乙的赠与，要求乙返还财产
C．甲的继承人无权请求返还受赠房屋
D．甲的继承人应当在赠与财产所有权移转后6个月内行使撤销权


4、 班主任工作的中心环节是（　　）。
A．了解和研究学生
B．组织和培养班集体
C．教育学生努力学习
D．对学生进行品德教育


5、 在教学中运用教学方法时，应从实际出发随时调整，这体现了下列哪一特点?（　　）
A．综合性
B．创造性
C．灵活性
D．教育性


填空题
6、 凡未受人类干扰或扶持，在一定空间和时间范围内，依靠生物和环境本身的自我调节能力来维持相对稳定的生态系统，是______。


7、阅读孟子《寡人之于国也》中的一段文字，然后回答以下小题。
不违农时，谷不可胜食也；数罟不入洿池，鱼鳖不可胜食也；斧斤以时入山林,材木不可胜用也。谷与鱼鳖不可胜食，材木不可胜用，是使民养生丧死无憾也。养生丧死无憾，王道之始也。     
1．这段文字集中论述了什么问题？
2．这段文字采用了哪种说理方式？
3．这种说理方式的好处是什么？


简答题
8、简述艺术活动的功能。


9、 一天，某石灰厂放炮炸石。在经过观望、呼喊、吹哨等程序后，在认为安全的情况下点火。于某这一天赶着马车来装石灰，正赶上放炮，碎石将于某砸伤，花去医药费若干。于某让石灰厂赔偿，石灰厂认为自己在放炮之前，采取了必要的安全措施，于某自己对损伤有过错，所以，石灰厂不承担责任。问：
(1)对于某的损失，石灰厂有无责任?
(2)于某可以提出哪些理由支持自己的诉讼请求?


10、

求由曲线所围平面图形分别绕
x轴和y轴旋转一周所得体积V和S

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