According to the passage, which of the following statements is NOT true?
A. It is not quite easy to tell how “rock and roll” began.
Both the blues and country music were developed by the musicians in the southern United States.
C. Both the Europeans and the African slaves came to America during the 17th century.
D. It was the blues songs recorded in Memphis that made Elvis Presley popular throughout the nation.
查看答案
The word “line” (Para. 3, Line 4) 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 song
Which of the following statements is NOT mentioned in the passage?
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 musiciansin 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.
出现中性粒细胞核左移，应首先考虑
A. 预后不良
B. 白血病
C. 机体免疫力增强
D. 有较严重的感染
E. 骨髓造血功能减退
核右移必须具备
A. 五叶核以上的细胞超过3%
B. 杆状核以上的细胞超过5%
C. 白细胞总数增高
D. 白细胞总数降低
E. 分叶核细胞占90%
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