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发布时间：2006-06-21 20:59     点击：

32 why is the man watching television?

33 why is the man surprised that the woman wants to study linear algebra with him?

34 why doesn't the man want to call Elizabeth?

Questions 35 through 39:

Listen to two students talking about their engineering class.

woman:hello?

man:hi,may,this is bill johns.

woman:oh hi,bill.you weren't in engineering class today, were you?

man:i have the ful.i was sonderfing if you could tell me what went on.

woman:actually we had an interesting class. Dr.Collin talked about a new type of fuel.

man:oh,yeah?

woman:uh-hum.it's called dimethyl-ether or DME.

man:oh,i remember reading somethinga bout DME.it's mostly used in spray cans,right?

woman:right. DME doesn't destory the ozone,so it's been environmentally friendsly.

man:but doesn't DME pullute the air if it's burned in an engine?

woman:Dr.Collin says something about its exhausts being clear,that it doesn't release as much pullutants as diesel fuel.and he mentioned something about DME being more efficient than other alternative fuels.

man:when will it replace diesel fuel?

woman:not for a while.it's not economical to massproduce.

man:well,thanks for the information.i guess i won't need to borrowyour notes.

woman:well,maybe you should look at them.we are having a test next week.

man:okay,could u give them to Mike Andrews? I think he is in your psychology class.he is my roommate.

woman:sure.i hope you're feeling better soon.

man:thanks.me too.bye!

woman:bye!

35 what is the converstation mainly about?

36 why is the woman giving the man the information?

37 what effect will the increased use of DME instead of diesel fuelprobably have?

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