题目内容

副溶血性弧菌血平板上见不到溶血环

A. 对
B. 错

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副溶血性弧菌不能使血平板产生溶血环

A. 对
B. 错

大肠杆菌不能发酵葡萄糖产气

A. 对
B. 错

金黄色葡萄球菌能发酵葡萄糖产气

A. 对
B. 错

What can we predict from the title of the passage?

A. Tweens are unwilling to show themselves online
B. Tweens prefer dating online secretly
C. Parents have no idea about their kids’ online activities
D. It is hard for parents to supervise their kids’ online activities

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