题目内容：

More and more often we heard of people talking about Karaoke（卡拉OK）.But what on earth it is about，still remains a question for many people. Karaoke is a sort of acoustic equipment which was invented in Japan around the middle of the 1970's. 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 of the music that came from the equipment. Shortly after its invention， Karaoke was spread to the whole world. It was introduced to China and 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.In this passage "band" means "group of persons ________."

A. who play games on the sports ground

B. who play music together

C. living in the same neighborhood

D. doing things together under a leader and with a common purpose

2.Karaoke is just a ______.

A. cassette tape with only music

B. cassette tape recorder

C. band from Japan

D. voice recording equipment

3.People went to public houses and snack bars ______when Karaoke appeared.

A. to have a good time

B. to have something to drink

C. to get something to eat

D. to buy the equipment

4.The main idea of this passage is ______.

A. all persons like to play Karaoke

B. to introduce Karaoke to the people

C. Karaoke is a wonderful equipment

D. Karaoke is used everywhere including snack bars