7.Which of the following could best replace the underlined word in the last paragraph ?

    A.link          B.click         C.compare      D.describe

C

Not all memories are sweet. Some people spend all their lives trying to forget bad experiences . Violence and traffic accidents can leave people with terrible physical and emotional scars . Often they relive (重新体验) these experiences in nightmares .

Now American researchers think they are close to developing a pill , which will help people forget bad memories . The pill is designed to be taken immediately after a frightening experience . They hope it might reduce , or possible erase (抹去) the effect of painful memories .

In November , experts tested a drug on people in the US and France. The drug stops the body releasing chemicals that fix memories in the brain . So far the research has suggested that only the emotional effects of memories may be reduced , not that the memories are eased .

The research has caused a great deal of argument . Some think it is a bad idea , while others support it . Supporters say it could lead to pills that prevent or treat soldiers’ troubling memories after war .

They say that there are many people who suffer from terrible memories . “Some memories can ruin people’s lives . They come back to you when you don’t want to have them in a daydream or nightmare . They usually come with very painful emotions ,” said Roger Pitman , a professor of psychiatry (精神病学) at Harvard Medical School. “This could relieve a lot of that suffering .”

But those who are against the research say that changing memories is very dangerous because memories give us our identity (物质). They also help us all avoid the mistakes of the past . “All of us can think of bad events in our lives that were horrible at the time but make us who we are . I’m not sure we’d want to wipe those memories out.” said Rebecca Dresser , a medical ethicist (伦理学家).

Some people fear that although the drug would first be used in only very serious cases , it would become more and more common . “People always have the ability to misuse science,” said Joeph LeDoux, a New York University memory researcher . “All we want to do is help people have better control of memories .”

3.Which one means “laughing” in the text messages ?

    A.:-(          B.:-)           C.:-<           D.8-|

B

The rise of Internet video sensation You Tube. com is a typical Internet success story .

A year ago Chad Hurley , 28, and Steve Chen , 26, were unemployed . One day , after a dinner party , they realized that there was no easy way to share online video. So they decided to build . After raising money on credit card loans and working in Hurley’s garage in California , You Tube . com was born last May .

Now the site is the Internet’s leading video-sharing portal , home to thousands of short films .Amateur videos made by teenagers sit alongside slick productions posted by multinational companies and Hollywood directors .

“We provide a stage where everyone can participate an be seen,” said Hurley .

About 35,000 new videos are posted daily . The new content draws an ever-growing audience : more than 35 million short videos , most lasting 30 seconds to 2.5 minutes , are already being watched online every day .

The site’s popularity depends largely on referrals from users . They introduce their favorite videos to friends and family . Then new viewers add their own videos , and more viewers come . This continually deepens the pool of content .

Analysts liken the site to MySpace . com , the hip Internet hangout for teens and young adults . YouTube drew much of its early audience from MySpace members looking for a place to share their videos .The latter has since added that feature .

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