毛 * * 曾在1962年《送瘟神》一首诗中写到:“坐地日行八万里,巡天遥看一千河”的

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问题:

毛 * * 曾在1962年《送瘟神》一首诗中写到:“坐地日行八万里,巡天遥看一千河”的诗句。这里的八万里指人随地球的自转而运动的距离。如果地球半径取6400km ,你能否根据所学的知识计算一下,在赤道上的物体,每昼夜随地球自转运动的距离是____________;在北纬30°处的物体,每昼夜随地球自转运动的距离是______________。(取2位有效数字)

考点:万有引力定律的其他应用
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理解课文内容填空。  

1.问渠那得清如许,                                   。   

2.锲而舍之,                      ,锲而不舍,                       。   

3.《匆匆》的作者是                      ,文章通过具体描述日子来去匆匆,一闪即逝,表达了作者 ____                   的思想。   

4.《将相和》这篇课文由____、____、____三个小故事组成。后 来常用将相和比喻                                                                 

5.以子之矛,____何如?意思                                                                                   。

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35岁男性患者因左下后牙食物嵌塞2年多就诊。查左下第二前磨牙龋深达髓腔,牙髓无活力,叩诊略异样感,X线片见根尖周X线透射区3mm×5mm,边界较清楚。该主诉牙应明确诊断为

A.慢性根尖肉芽肿

B.慢性根尖脓肿

C.根尖囊肿

D.慢性根尖炎

E.有瘘型根尖脓肿

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何谓痛风?

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据学者考证,汉代已可种植反季节蔬菜,但当时有人认为这种做法违反自然节律,会导致灾异。这种看法的理论基础是()

A.勤俭节约

B.天人感应

C.重农抑商

D.格物致知

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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 p support systems appear better able to cope with major life changes and daily hassles. People with p social ties live longer and have better health than those without such ties. Studies over a range of illnesses, from depression to heart disease, reveal that the presence of social support helps people fend off 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 despite 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. Engaging in leisure-time activities with others helps us to meet our social needs while at the same time distracting us from our worries and troubles. Finally, other people may give us instrumental support—financial aid, material resources, and needed services—that reduces stress by helping us resolve and cope with our problems.

Helping a sick neighbor with some repair work is an example of______.

A. informational support

B. instrumental support
C. social companionship

D. the strengthening of self-respect

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