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【单选题】
骨骼肌纤维形成横纹的原因是A.
多个细胞核横向规律排列
B.
肌浆内线粒体横向规律排列
C.
质膜内褶形成的横小管规律排列
D.
相邻肌原纤维的、暗带对应排列在同一水平
E.
和暗带内肌红蛋白含量不同
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举一反三
【单选题】Questions 61-65 are based on Passage Two: Passage Two As the 21st century begins, a number of leaders in politics, education, and other professions believe that the US must adopt some new values to go...
A.
Which is Better, New Value or Old Value?
B.
Conservation vs. Need for Jobs
C.
The Need for New National Values
D.
Cooperation and Competition
【简答题】Passage Two Questions 62 to 66 are based on the following passage. 第62题：
【简答题】Passage Two 第30题：
【简答题】Two of the results of lacking water mentioned in the passage are ______.
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