若有如下程序段，其中s、a、b、c均已定义为整型变量,且a、c均已赋值（c大于0）
题型：单项选择题
问题：
若有如下程序段，其中s、a、b、c均已定义为整型变量,且a、c均已赋值（c大于0） s=a; for(b=1;b<=c;b++) s=s+1; 则与上述程序段功能等价的赋值语句是（ ）。
A．s=a+b;
B．s=a+c;
C．s=s+c;
D．s=b+c;
题型：单项选择题
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 possibility to give and receive support from one another under stressful conditions .Social support makes up of the exchange of resources among people based on their interpersonal ties .Those of us with strong support systems appear better able to cope with major life changes and daily hassles(困难). People with strong social ties live longer and have better health than those without such ties. Studies over types of illnesses, from depression to heart disease, show that the presence of social support helps people fend off(挡开) 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 co-workers may let us know that they value us .Our self-respect is strengthened when we feel accepted by others in spite of our faults and difficulties. Second, other people often provide us with informational support .They help us to define and understand our problems and find solutions to them. Third, we typically find social companionship supportive. Taking part in free-time activities with others helps us to meet our social needs while at the same time distracting (转移注意力)us from our worries and troubles. Finally, other people may give us instrumental support—money aid ,material resources, and needed services—that reduces stress by helping us resolve and cope with our problems.
56. Interpersonal relationships are important because _______.
A. they are indispensable(不可缺少的)to people’s social well-being
B. they awaken people’s desire to exchange resources
C. they help people to cope with life in the information era
D. they can cure a range of illnesses such as heart disease, etc
57. Research shows that people's physical and mental health _______.
A. relies on the social medical care systems which support them
B. has much to do with the amount of support they get from others
C. depends on their ability to deal with daily worries and troubles
D. is closely related to their strength for coping with major changes in their lives
58. Which of the following is closest in meaning to the underlined word “cushions”?
(Line 1, Para 2)
A. adds up to B. does away with
C. lessens the effect of D. lays the foundation for
59. Helping a sick neighbor with some repair work is an example of _______.
A. instrumental support B. informational support
C. social companionship D. the strengthening of self-respect
60. Social companionship is beneficial in that__________.
A. it helps strengthen our ties with relatives
B. it enables us to eliminate our faults and mistakes
C. it makes our leisure-time activities more enjoyable
D. it draws our attention away from our worries and troubles