题目内容

细菌的群体特征为

A. 菌粉
B. 菌苔
C. 菌落
D. 菌液

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下列哪些是细菌的特殊结构

A. 细胞膜
B. 荚膜
C. 芽胞
D. 质粒

细菌在适宜条件下培养,在()期时形态典型

There are _____ on the cupboard.

A. plates
B. plate
C. a plate
D. the plate

Which glasses? _______ glasses?

A. That
B. These
C. This
D. A

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