Cometsarestillregardedwithawebysomepeople.
A、wonderIncalculatingthedailycalorierequirementsforanindividual,variationsinbodysize,physicalactivity,andageshouldbetakenintoaccount.
Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.
Themegaphone(microphone)makesthevoicesoundlouderbecauseitpointssoundwavesinonedirectionandkeepsthemfromspreadingoutinalldirections.
Thefearofsmallpox,whichterrorizedtheeighteenthcentury,hasnoanalogy(likeness)today.
ThefirstimportantexpositionintheUnitedStateswasheldinPhiladelphiain1876.
