The word“line”in para.3 means .
A. the rhythms of the work songs
B. a group of words in a passage
C. the strings of the guitar
D. a group of words in a songs
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Which of the following is NOT MENTIONED in the text?
A. Rock music developed mainly from the interaction of black African and white European music.
B. The development of rock and roll has something to do with the musicians in the southern United States.
C. Without Elvis Presley there would be no rock and roll.
D. Elvis Presley played an important role in early rock and roll.
It is difficult to say how “rock and roll” began because itcame from so many difficult countries and so many difficult kinds of music and musicians.
A. 对
B. 错
When people talk about early rock and roll,they will think of Elvis Presley.
A. 对
B. 错
关于糖尿病患者尿液检查，正确的叙述是
A. 尿外观似无色，量常增多，比重较高，尿糖定性试验阳性
B. 尿外观似无色，量常增多，比重较低，尿糖定性试验阴性
C. 尿外观似无色，量常增多，比重较低，尿糖定性试验阳性
D. 尿外观似乳白色，量常增多，比重较高，尿糖定性试验阳性
E. 尿外观似乳白色，量常增多，比重较低，尿糖定性试验阴性
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