阅读表达。
阅读下面短文并回答问题,然后将答案写到答题卡相应的位置上(请注意问题后的词数要求)。
［l］Internet use appears to cause a decline in psychological well-being, according to research at
Carnegie Mellon University.
[2] Even people who spent just a few hours a week on the Internet experienced more depression and
loneliness than those who logged on
less frequently, the two-year study showed. And it wasn't that people who were already feeling bad spent more time on the Internet, but that using the Internet actually appeared to cause the bad feelings.
[3]Researchers are puzzling over the results, which were .They expected that the Internet would
prove socially healthier than television, since the Internet allows users to choose their information and to
communicate with others freely.
[4]The fact that Internet use reduces time available for family and friends may account for the drop in
well-being. Faceless, bodiless "virtual" communication may be less psychologically satisfying than actual
conversation, and the relationships formed through it may be shallower. Another possibility is that
exposure to the wider world via the Internet makes users less satisfied with their lives.
[5] "But it's important to remember this is not about the technology, it's about how it is used," says
psychologist Christine Riley of Intel, one of the study's sponsors. "In really points to the need for
considering social factors in terms of how you design applications and servises for technology."
1.What's the main idea of the text?(no more than 10 words)
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2.What is the meaning of the underlined phrase "logged on"in Paragraph 2?(no more than 3 words)
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3. Fill in the blank in Paragraph 3 with proper words.(no more than 5 words)
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4. Complete the following statement with words from Paragraph 4.(2 words)
Experiencing the online may cause Internet users to feel their real lives unsatisfactory.
5. Translate the underlined sentence in Paragraph 5 into Chinese.
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＞
，若拉力F做的功为W1，平均功率为P1；物体克服摩擦阻力Ff做的功为W2，平均功率为P2，则下列选项正确的是