When Chunjie is coming, people are busy ( )
A. buying things
B. cooking food
C. cleaning house
D. making Spring Festival couplets
查看答案
On Spring Festival people will （ ）
A. wear new clothes
B. visit friends and relatives
C. give red bag to children
D. climb mountains
自然界最小的细胞是
A. 病毒
B. 支原体
C. 血小板
D. 细菌
E. 放线菌
下列哪种属于原核细胞
A. 酵母
B. 蓝绿藻
C. 病毒
D. 类病毒
E. 精子细胞
原核细胞与真核细胞共有的细胞器是_______________
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