经济基础理论认为，( )是城市经济力量的主体。A．第一、二类产业 B．第三、四类产

某密闭容器中有X、氧气和二氧化碳三种物质，在一定条件下充分反应,测得反应前后各物质的质量如下表。根据表中信息，判断下列说法正确的是

物质	X	O2	CO2	H2O
反应前质量/g	16	70	1	0
反应后质量/g	0	待测	45	36

A．该反应为置换反应        　　B．X中一定含有碳、氢两种元素

C．表中“待测”值为5         　　D．反应生成的CO₂和H₂O的质量比为45:36

Since we are social beings, the quality of our lives depends in large measure on our interpersonal relationships．One strength of the human condition is our tendency to give and receive support from one another under stressful circumstances．Social support consists of the exchange of resources among people based on their interpersonal ties．Those of us with strong support systems appear better able to deal with major life changes and daily difficulties．People with strong social ties live longer and have better health than those without such ties．Studies over a range of illnesses, from depression to heart disease, show that the presence of social support helps people protect themselves from illness, and the absence of such support makes poor health more likely．

Social support cushions stress in a number of ways．First, friends, relatives and coworkers may let us know that they value us．Our self respect is strengthened when we feel accepted by others despite our faults and difficulties．Second, other people often provide us with informational support．They help us to explain and understand our problems and find solutions to them．Third, we typically find social companionship supportive．Engaging in leisure time activities with others helps us to meet our social needs while at the same time distract（转移…注意力）us from our worries and troubles．Finally, other people may give us important support—financial aid, material resources, and needed services—that reduces stress by helping us solve and deal with our problems．

小题1:Research shows that people’s physical and mental health has much to do with      .

A．the social medical system

B．the amount of support they get from others

C．their strength for dealing with interpersonal ties

D．their ability to deal with daily worries and troubles小题2:The underlined word “cushions” probably means “    ”

A．adds up to

B．decreases the effect of

C．gets rid of

D．lays the foundation for小题3:Social companionship is beneficial in that it

A．helps strengthen our ties with relatives

B．enables us to get rid of our faults and mistakes

C．makes our leisure time activities more enjoyable

D．draws our attention away from our worries and troubles

朝鲜历史上发生于1592—1598年的抵抗日本侵略的卫国战争称为（）

当事人在合同的订立过程中有过错，给对方造成损失，应当承担订约过错责任的情形包括( )。

A．假借订立合同，恶意进行磋商的

B．泄露对方商业秘密的

C．提供虚假情况的

D．故意隐瞒与订立合同有关重要事实的

E．经过艰苦的谈判但最终未签订合同的

数据结构