问题
单项选择题
汽油发动机的压缩比大约为（）
A、3-6
B、6-9
C、9-12
D、12-20
答案
参考答案：B
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汽油发动机的压缩比大约为（）
A、3-6
B、6-9
C、9-12
D、12-20
参考答案：B
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children 1 his family. His father, Joe Jackson, set up the family band "The Jacksons". It 2 became "The Jackson 5". Little Michael always 3 his brothers practice singing. when he was about 5 years 4 he joined the group and became the lead singer of "The Jackson 5". Michael's first public show was at a school program in his 5 grade in 1963. Weaing black 6 and a white shirt, he sang Climb Evry Moutain. Michael said,"Everybody gave me a big hand 7 I finished singing. I just couldn't believe it. I didn't think I had done anything special. I was just 8 the way I sang at home every night. I just open 9 mouth and sing". Michael's father was very strict with his sons. With their 10 help, Michael and "The Jackson 5" Started collecting trophies (奖杯) at talent shows. | |
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