DavidOi,aresearchentomologistattheDepartmentofAgriculture,toldThe NewYorkTimesin2013,thestrangeideathattheantsareactuallyattractedto theelectricityitselfcan'tberuledout.

ThecrazyantsorRaspberryants-yep,that'sactuallywhattheyare called-arefoundin23Texascounties.Theantshaveverylittlevenom（毒液）,but docauseaslightstingwhentheybite.Mostly,though,they'reahazardto electricalequipment.

Theyarearelativelynewspeciesintheregionandlittleisknownabouthow tocontrolorkillthepopulation.And,unfortunately,theredoesn'tseemtobe muchthatcanbedoneaboutthemrightnow.So,forthemoment,thebestadvice isnottostayclosetoantpilesandgroups.andhopethatnonemakeitinside tocrawlaroundtheelectronics.

28.WhatdotheantsdoinTexas?

ABitesomepeople.B.Damagelocalcrops.

C.Destroyappliances.D.Polluteenvironment.

29.Theunderlinedword"nuisance"inParagraph2isclosestinmeaningto "”.

A.storyB.problemC.visitD.failure

30.Whenmeetingwithantpiles,we'dbetter.