F and partial diploids The F-factor in a Hfr chromosome can excise out to become an autonomously replicating plasmid If a segment of the chromosome becomes part of the F pp lasmid during excision, the new element is called an F plasmid

Try to find out all expressions showing graceful hands” in our text.How many times? Find out words of Mrs. Clark Pick out descriptions about ward and Mrs Clarks physical conditions

Lead-in Questions 1. Are you iron deficient 2 How would you know? a, tired b have reduced ability to exercise. C have poor stamina d get frequent infections e are lethargIc

Campylobacter Among the most widespread cause of infection in the world Cause both diarrheal and systemic diseases Campylobacter jejuni

Mycoplasmas a group of the smallest organisms that can be free living in nature, Pass bacterial filter and also grow on laboratory media. More than 80 species, belong to Mycoplasmatales of mollicute. 3 families can be divided:

General introduction Gram-negative, obligate intracellular coccobacilli bacteria that infect mammals and arthropods Rickettsiae are transmitted in the arthropods, which serves as both vector and reservior Both dna and rna Is sensitive to antibiotic

Biological Features Aerobic, Gram, noncapsulated, rods Gray-black colonies on tellurite亚碲酸盐 medium o Metachromatic granules Chinese-letter morphology in Gram stain

I. Greetings II. Review Have a quiz III. Start the new lesson 1.Introduction This article talks about birth of bright ideas by the vividly paradigmatic methods After reading it, we have a new understanding about the mysterious question 2. Discourse analysis Part one (Paras.1-3)Opening remarks: All truly creative activities depend in some degree on the signals of the unconscious. Part two (Paras. 4-6) Discussing the birth of bright ideas with the example some famous persons

I. Greetings . Review Have a dictation IlI. Start the new lesson 1 Introduction: A young man with a gun suddenly attacked me when I walked out of my garage with some KFC in my hand. Not only my money and watch, but also the KFC chicken was

I Greetings IL. Review: the new words and phrases of Unit Three II Start the new lesson 1. Introduction: Listening passage: People judge other people within the first seven seconds of meeting them. You can have a positive effect on other people through using your eyes, face and body in unspoken communication