题目内容

微生物细菌方法鉴定中细菌总数小于104个/g认为是新鲜鱼。（）

A. 对
B. 错

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盐干品是比煮干品更进一步的加工方法，在南方潮湿地区干制加工中占有重要地位。（）

A. 对
B. 错

There are some _ and two _ in the room.

A. child, woman
B. children, woman
C. child, women
D. children, women

---What is John doing? ---He’s _____ the blackboard.

A. looking at
B. reading on
C. taking off
D. putting on

---What is the dog doing ? ---It’s running _____ the grass.

A. at
B. across
C. of
D. on