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6.

A. There are so many people at the corner.
B. His English is so poor, while others at the corner are good at English.
C. No matter how hard he works at English, there is no improvement.
D. Whenever he speaks English, he seems to make mistakes

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7.

A. People don’t laugh at those who make mistakes.
B. It is a good idea to speak as much English as you can, but be careful to avoid making mistakes.
C. People should not be afraid of making mistakes.
D. It is a good idea to take every chance to speak English

微生物计数法中,平皿法适用于( )

A. 无明显抑菌作用的制剂
B. 有抑菌作用的制剂
C. 可溶性抑菌制剂
D. 水溶性供试品

微生物限度检查法包括微生物计数法和{1}。

微生物计数包括( )

A. 需氧菌总数
B. 霉菌和酵母菌总数
C. 耐胆盐革兰阴性菌数
D. 铜绿假单胞菌总数
E. 金黄色葡萄球菌总数

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