搜题请搜索小程序“爱下问搜题”
问题 单项选择题

证券分析师在进行公司财务分析时，一般应特别关注一下财务报表附注四个方面的内容。下列各项不属于其内容的是( )。

A．收入说明

B．重要会计政策和会计估计及其变更的说明

C．或有事项

D．关联方关系及其交易的说明

答案

参考答案：A

解析： 证券分析师在进行公司财务分析时，一般应特别关注一下财务报表附注四个方面的内容：重要会计政策和会计估计及其变更的说明、或有事项、资产负债表日后事项、关联方关系及其交易的说明。

实验题

现提供生长良好的菠菜，请就有关实验回答：

(1)生物实验室里，有下列试剂供实验时选用

A．1×l0-10moI/L的吲哚乙酸   B．1×10-4mol/L秋水仙素 C．0.3g/mL蔗糖溶液  D．醋酸洋红染液 E．8%HCl溶液   F．0.8g/mL蔗糖溶液

分别用上述6种试剂处理菠菜根尖细胞30min后观察，经哪些试剂处理后的细胞仍有生活力____。欲观察菠菜根尖细胞染色体，应选用___试剂染色；能促使插条生根的试剂是____；欲使菠菜(二倍体)的单倍体幼苗长大后的植株恢复可育，应选用试剂____。欲观察DNA和RNA在菠菜叶表皮细胞中的分布实验，在染色前应选用____试剂进行水解。(以上空格均填编号)

(2)在探究“植物细胞的吸水和失水”实验中，用试剂C(加一些红墨水)处理菠菜叶表皮。镜检时发现表皮细胞____部位呈红色。在装片中观察一个细胞首先发生质壁分离的部位是____。若改为试剂F处理菠菜叶表皮，过一段时间后，用清水替代试剂F，镜检时发现____。

(3)提取菠菜叶片中的叶绿体色素，为了防止研磨时叶绿素遭到破坏，应向研钵中加入少许的____(试剂)。在层析液中分离的结果，滤纸条上色素带颜色从下到上依次是____。其中色素带最宽的是____，层析液中溶解度最大的是____。

(4)为了观察叶绿体的形态和分布，某同学把撕取的菠菜叶片带叶肉的下表皮置于载玻片上，直接用高倍镜仔细观察，未能达到实验目的，请修改其主要的方法步骤：____________。
查看答案
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 conditions 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 p support systems appear better able to deal with major life changes and daily problems. People with p 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 defend themselves against illness, and the absence of such support makes poor health more likely.
Social support cushions stress in a number of ways. Firstly, 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. Secondly, other people often provide us with informational support. They help us to define and understand our problems and find solutions to them. Thirdly, 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 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 deal with our problems.

Helping a sick neighbor with some repair work in spare time is an example of ______.

A. instrumental support
B. informational support
C. social companionship
D. the strengthening of self-respect
查看答案