无丝分裂比较简单、快速,分裂时不形成纺锤丝,又可称为直接分裂。( )
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Student:__________about missing some classes?Advisor:The big deal is that you’re here on a
A. How
B. Why
C. Anything serious
D. What’S the big deal
Thomas:Shall we go to the swimming pool?Bing:N0,I‘m scared of water. Thomas:Then where do
A. I"d rather
B. I"d like
C. I"m glad
D. I"m fine
虎克第一次观察细胞时,因显微镜放大的倍数太低,未能发现细胞核。( )