7.lǎoye
A. 爷爷
B. 姥爷
C. 奶奶
D. 外婆
E. 外公
6.yùndòng
A. 漂亮
B. 喜欢
C. 运动
D. 三月
E. 眼睛
A sarcomere consists of ()
A. 1/2 I band + A band + 1/2 I band
B. 1/2 A band + I band + 1/2 A band
C. 1/2 I band + 1/2 A band
D. 1/2 I band + A band
E. I band + A band
Transmission electron microscope shows ()
A. small structures within cells or tissues
B. surface views of cells or organs
C. structures within nucleus
D. structures within organelles
E. structures within biomembrane
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