L1：
Lecture 1
第一题
What is the lecture mainly about?
AResearch that led to the development of the first antibiotics
BEfforts to raise awareness about antibiotic resistance
CReasons for antibiotic resistance and ways of overcoming it
DDifferences between genetically engineered antibiotics and natural ones
第二题
Why does the professor mention the life span of bacteria?
ATo emphasize how many mutations occur in bacteria
BTo explain one mechanism by which antibiotics work
CTo point out a challenge in researching bacteria
DTo point out a difference between bacteria and other single-celled organisms
第三题
According to the professor, what are some examples of bacterial mutations that result in an increased resistance to antibiotics? Select 3 answers
AThe production of new enzymes that attack antibiotic molecules
BThe ability to reproduce faster than antibiotics can act
CA structural change that makes the cell wall less vulnerable
DThe ability to mimic the appearance of antibiotic molecules
EA mechanism that removes antibiotic molecules from the bacterial cell
第四题
According to the professor, what is a benefit of combination therapy?
AIt prevents healthy genes from mutating.
BIt strengthens the walls of cells.
CIt targets only specific bacteria.
DIt uses antibiotics already available to doctors.
第五题
What is the professor’s opinion about the potential of natural approaches to fighting bacteria?
AThe risks of using natural approaches outweigh the potential rewards.
BNatural approaches can be better than what researchers can develop alone.
CCurrent research on the potential of many natural approaches is inconclusive.
DResearchers are more optimistic about natural approaches than doctors are.
第六题
According to the professor, what challenge do phages pose to researchers?
AFinding the right phage for each purpose is difficult.
BCultivating phages in a laboratory is expensive.
CPhages are dangerous to handle.
DPhages evolve in unpredictable ways.
