9. The scientist        (觀察) the behaviour of the mice after they were given the drug.

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1 .—What do you think of the song?

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Do you like singing? Nowadays we often hear of people talking about karaoke. But what on earth it is about still remains a question for many people.

Karaoke is a sort of acoustic equipment which was invented inJapanaround the middle of the 1970s. It means “a band without people” in Japanese. In fact,it is just a music tape without words. This equipment first appeared in some public houses and snack bars,and mainly for the customers to enjoy themselves. Most of the music in karaoke was popular music. Therefore,at times,when anyone felt like it,he might sing songs to the accompaniment(伴奏) of the music that came from the equipment.

Shortly after its invention,karaoke was spread to the whole world. It was introduced toChinaand was welcomed by many people. Although you are not a good singer,or even sometimes you may sing out of tune,you can always enjoy yourself by singing karaoke.

1. The underlined word “band” means a group of persons        .

   A. who play music together

   B.  who play games on the sports ground

   C.  living in the same neighbourhood

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   B.  to have something to drink

   C.  to get something to eat

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   B.  long ago

   C.  not long after it was invented

   D.  before long

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   A. all persons like to play karaoke

   B.  to introduce karaoke to the people

   C.  karaoke is a sort of wonderful acoustic equipment

   D.  karaoke is used everywhere including snack bars

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5. The      (tradition) approach to dealing with complex problems is to break them down into smaller,more easily managed problems.

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       ,  we can’t afford luxuries.

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