题目内容

从自然界中筛选微生物的一般步骤为采集菌样、富集培养、纯种分离性能测定、菌种保藏

A. 对
B. 错

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测量土壤中的微生物数量的方法为稀释培养法

A. 对
B. 错

微生物可以在空气中生长,以浮游状态存在于空气中。

A. 对
B. 错

反刍动物的瘤胃中有较多的微生物

A. 对
B. 错

请根据短文7B““Make a Good First Impression”的内容补全以下每个句子1.Thewell-dressed rich woman's face showed ________2.Dr. Stephen K.Sprou's waiting room was full of people waiting to ______3. People would like to do many other things rather than _______4. The gentleman in the waiting room was annoyed by ______5. The baby's smile brought everyone in the room _________6.Your smile brightens the lives of people who see it and conveys ________

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