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between populations.But because the tools are open-source, other scientists can use them todiscover more about whale language.We seem to be so disconnected from, or simply have noaccesstothisamazingunderwaterworldofsound,"hesays.Ithinkit’sabouttimethatwechange that."28.Why is it difficult to identify the source of biotwang?A.Because years of audio data need to be analyzed.B.Because enough time and a right moment are a must.C.Becauseresearchers lack a knowledge ofmarineanimals.D.Because biotwang alternates with low and high frequency .29.What is paragraph 5mainly about?A.Who solved thebiotwang mysteryB.When theBryde's whaleusually appeared.C.How the source of biotwang was determined.D.Why the Bryde's whale was difficult to observe.30.What isHarrell's attitude toward their team's discovery?A.Ambiguous.B.Objective.C.Unconcerned.D.Disapproving.31.What can be the suitable titlefor the passage?A.Mystery of BiotwangFinally SolvedB.AIAlgorithmsAppliedinBiotwangResearchC.Singer of theDeepOcean—Bryde’sWhaleD.Protection of the Deep Ocean—A LongWay to GoD"It won't forgive your mistakes," wrote Valentin Lebedev, an astronaut, in his diary.“Eveneating becomes more complicated. You must be careful and rely on sealed containers andspecialized utensils to openpackages.Spillscan be dangerous as foodparticles or liquids mightfloat into equipment or get into your eyes or nose."Enough to say the anxiety of an altogetherdifferent order in zerogravityWhat'sworse,in space,no one canhearyou scream about travel delays.When will Igetback?Such is the dilemma ofButch Wilmore and Suni Williams, two astronauts who havebeenstranded（被滞留的）ontheInternationalSpaceStation(ISS）sincedockingthereonJune6,2024.NASAdoesnotlikethatword.As oneofficial insisted,“Iwant tomake itvery clearthatButch andSuni are not stranded in space."MrWilmore and MsWilliamsarrivedattheISSaboard thefirstcrewedflight ofBoeing'sStarliner.What was meant to be an eight-day stay is approaching the three-month mark aftertheircapsuleleakedhelium（氮）andfive of its28enginesmalfunctioned.Thathasdelayedtheirreturn,possiblyuntilFebruary1,2025.Preciselywhathappensnowdepends onwhetherNASAthinksStarliner issafe—testsare ongoing—orwhether they arebetter offgettinga ride高三英语第6页共11页