2、 社会主义初级阶段主要矛盾决定的中心任务是 
A．经济体制改革
B．政治体制改革
C．经济建设
D．对外开放

3、 生态因子可以简单地划分为生物因子和非生物因子两类，其中非生物因子不包括（　　） 
A．气候因子
B．土壤因子
C．地形因子
D．人为因子

4、 由于种群内个体间竞争而产生的种群分布是（　　） 
A．均匀分布
B．随机分布
C．成群分布
D．内分布

5、回答题
You really have to get very old before you realize you're old．I'm in my middle fifties and I don't　feel 21 yet．However, sometimes I look back at my childhood and 22 things to the way life is for 23 kids．Some things have certainly changed．One area of change is 24Some changes have been improvements．Some changes, on the other hand, have been 25
When I started school, most people didn't have a television; TV was just beginning to get 26My father decided to go all out and buy a 16 inch black and white Motorola 27 I still remember watching the Lone Ranger save people from the28guys on that awesome electronic machine．That was exciting!
Now, 29 have larger pictures in full color．The pictures are clearer and the sound is much more 30The new high definition sets are made to rival 31 screens．The variety and quantity of programming has 32 greatly．There are hundreds of channels and more shows than one person could ever watch．There are many fine entertainment and educational 33There's also a lot of garbage stuff that most 34 don't want their kids exposed to．Overall, we have more choices, and that is good．I wonder what 35 will be like when today's kids are my age．

A．young
B．old
C．sad
D．happy

6、甲妻病故，膝下无子女，养子乙成年后常年在外地工作。甲与村委会签订遗赠扶养协议，约定甲的生养死葬由村委会负责，死后遗产归村委会所有。后甲又自书一份遗嘱，将其全部财产赠与给其侄子丙。甲死后，乙就甲的遗产与村委会以及丙发生争议。对此，下列选项正确的是（　　）。
A．甲的遗产应归村委会所有
B．甲所立遗嘱应予撤销
C．村委会、乙和丙共同分割遗产，村委会可适当多分
D．村委会和丙平分遗产，乙无权分得任何遗产

7、甲把自有的三间房租给乙，双方商定协议时，甲提出：合同签订后，待本年冬季儿子能参军走了，再将三间房交付给乙住用，这一附条件的法律行为的性质是（　　）。
A．肯定延缓条件
B．肯定解除条件
C．否定延缓条件
D．否定解除条件

填空题
8、 北方针叶林分布在北半球高纬地区，它的分布区域属______。