（）是对工程项目进行事前成本控制的重要方法。A.项目成本分析表法 B.净值法 C.工

阅读理解。

     After blogging regularly for two months, people felt they had better social support and friendship networks

than those who didn't blog. Blogging can help you feel less isolated, more connected to a community and more

satisfied with your friendships. Both online and face-to-face, a new Australian research has found.

     Researchers James Baker and Professor Susan Moore from Swinburne have written two papers investigating

the psychological benefits of blogging-regularly updating personal web pages with information that invites others

to comment.

     The first, published in the latest issue of the journal CyberPsychology and Behaviour. compares the mental

health of people intending to blog with that of people not planning to blog. Moore says the researchers messaged

600 MySpace users personally and directed them to an online survey. A total of 134 completed the questionnaire.

84 intended to blog and 50 didn't.

     "We found potential bloggers were less satisfied with their friendships and they felt less socially integrated;

they didn't feet as much part of a community as the people who weren't interested in blogging …"Moore says.

"It was as if they were saying 'I'm going to do this blogging and it's going to help me'."

     And it seemed to do the trick, as the researchers' second study shows. This study which is yet to be

published, was conducted two months later. The researchers sent out questionnaires (调查问卷) to the same

group of MySpace users, this time 59 responded Bloggers reported a greater sense of belonging to a group of

like-minded people and feeling more confident because they could rely on others for help. All respondents,

whether or not they blogged, reported feeling less anxious, depressed and stressed after two months of online

social networking.

     "So going onto MySpace had lifted the mood of all participants in some way," Moore says. "Maybe they'd

just made more social connections."

     Moore acknowledges this is early research and hopes to follow a larger group of people for a longer period time to test some of the research findings.

1. What does the passage mainly tell us?

A. The mental health of bloggers.

B. Blogging improves one's social life.

C. What kind of people are likely to blog.

D. Blogging has become more and more popular.

2. It can be inferred from the fourth paragraph that _____.

A. those who were not interested in blogging didn't have good mental health

B. people were likely to become bloggers if they felt socially isolated

C. potential bloggers were those who had mental health problems

D. potential bloggers usually held a wrong view about blogging

3. The purpose of the second study is to find out _____. 

A. what people do on MySpace

B. how many people became bloggers

C. how people felt after blogging for two months

D. how many people kept blogging after two months

4. The second study shows that _____.

A. online social networking can do people good

B. only bloggers benefit from online social networking

C. not many potential bloggers became real bloggers

D. not all bloggers found the help they needed

5. The main purpose of people going onto MySpace is probably to _____.

A. exchange goods

B. entertain themselves

C. seek help

D. exchange views

根据面神经损伤Sunderland病理分级，面神经功能不能完全恢复，会出现联动、鳄鱼泪，面神经损伤程度是（）

A.神经失用

B.轴突中断

C.神经内膜中断

D.神经束膜中断

E.神经完全中断

产品成本项目中的原材料，包括直接用于产品生产的（）

A.原料

B.主要材料

C.辅助材料

D.包装物

E.修理用备件

当存在价格折扣时，进价成本与订货批量成正方向变化。( )

通常交换器树脂层内的工作层约有多少厚？运行中会受到哪些因数的影响？