陕西省2023-2024学年度第一学期九年级期中调研试题（卷）B英语试卷试卷答案

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30.What is the key to workforce composition?sawdust mix kills.The disinfectant damaged the microbes'cell walls.It also may haveA.Minimizing age bias.messed with the microbes'proteins and DNA.B.Giving up outdated strategies.Zhang and his fellow researchers didn't stop at a sawdust disinfectant.They madeC.Launching career development programs.disinfectants from other plant materials,too.Some of these started as bambooD.Employing people from different backgrounds.powder.Others were made using rice plant.Plant materials that are richer in31.What can be learned about older people from the last paragraph?molecules that release phenol-like compounds are best at killing microbes.OneA.Some regret after retirement.example is corn straw.B.Some remain social after retirement.32.What may be an advantage of Zhang's sawdust disinfectant over existing ones?C.Most don't retire until their 80s or 90sA.Being safer and more effective.D.Most keep updating their working skills.B.Being environment-friendly and less expensive.DC.Being less expensive and having more lasting effect.Chemicals taken from sawdust (and water can knock out more than 99D.Being more effective and having more lasting effect.percent of some disease-causing microbes ()That makes the sawdust mix a33.What gave Zhang the idea of the sawdust disinfectant?potential alternative to current microbe-killing chemicals.A.The absence of microbes in sawdust.Many disinfectants (used today can harm the environment.They formB.The phenol-like molecules in wood.poisonous by-products when they get washed.Some potentially greener disinfectantsC.The existence of a greener disinfectant.exist..They rely on a chemical called“phenol(苯酚)”.But these cleaners can be costlyD.The possibility of being food poisoned.and take a lot of energy to make.34.How was Zhang's research further carried out?Shicheng Zhang went searching for a better option.He's an environmentalA.By analyzing data from previous studies.engineer at Fudan University in Shanghai,China.Wood contains many moleculesB.By identifying the ways different disinfectants kill.that look like phenol.So Zhang wondered if microbe-killing chemicals could beC.By improving the process of dealing with by-productsobtained from sawdust through a low-cost and low-energy process.D.By comparing the effects of different concentrations of the mix.He and his fellow researchers cooked mixtures of water and sawdust for one hour.35.Which of the following is a suitable title for the text?They heated this sawdust soup under pressure,and then filtered it.Later,they testedA.A Public Drive Aims to Greener Disinfectantshow well the liquid killed off microbes.This liquid wiped out E.coli bacteria-B.A Chinese University Grows Microbe-killing Plantsmicrobes that can cause food poisoning.The liquid also killed anthrax bacteria.TheseC.A Disinfectant Made from Sawdust Knocks out Microbesmicrobes cause dangerous infections.What's more,the disinfectant stopped flu virusesD.A Chinese Team Made Breakthroughs in Disease Researchfrom being infectious.第二节（共5小题；每小题2.5分，满分12.5分）The researchers also added different amounts of water to the sawdust soup.That阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两let them test how concentrated it had to be to knock out microbes.Depending on its项为多余选项。concentration,the mix could kill more than 99 percent of the microbes.Revenge bedtime procrastination(报复性睡眠拖延症)refers to the decision toLooking at killed microbes under a microscope revealed some of the ways thedelay sleep in response to stress or a lack of free time earlier in the day.The addition of高三英语第7页（共12页）高三英语第8页（共12页）