Herearesomeofthefastestanimalsintheanimalworld.Asyoureadaboutthemrememberthattopspeedofhumanrunnersis20to25milesanhour.Andthefastesthumanrunnerscanonlyrunatthisspeedforafewhundredyards(码)。
Heavypeopledonotrunveryfast.Butsomeheavyanimalscanrunatamazingspeed.Blackrhinoscanrunataspeedofalmost30milesanhourEventhoughtheymayweighover3500pounds. | |
Cheetahsarethefastestlandmammals(哺乳动物)overshortdistances(距离).Theycanrunataspeedofover70milesanhour.Buttheygettiredquicklyandusuallystopafterafewhundredyards. | |
Pronghornantelopesarethefastestlandmammalsoverlongdistances.Theycanrunataspeedof35milesanhourformanymiles.Theirtopspeedisprobablymorethan50milesanhour. | |
Hummingbirdsarethesmallestbirds.Buttheymovetheirwings(翅膀)fasterthanotherbirds.Someofthembeattheirwings4500timesaminute | |
Ostrichescan’tflybuttheycanrunfasterthanotherbirdsandmostotheranimalsaswell.Theycanrunatatopspeedof43milesanhourforashortdistanceButcankeepupaspeedofmorethan30milesanhouroverlongdistances.Theyarealsothelargestofallbirdsandtheylaythelargesteggs. |
1.Howmuchmayablackrhinoweigh?
A.Over4500pounds. B.Over3500pounds.
C.2000pounds. D.1500pounds.
2.Whatarethefastestlandmammalsovershortdistances?
A.Cheetahs. B.Pronghornantelopes.
C.Horses. D.Elephants.
3.Thetopspeedofpronghornantelopesmaybeover_____milesanhour.
A.20 B.30 C.35 D.50
4.Ostrichescanrunmorethan_______milesanhouroverlongdistances.
A.50 B.43 C.35 D.30
5.Whichisthebesttitleforthispassage?
A.Thesmallestbirds
B.Whatlaysthelargesteggs
C.Thefastestanimals
D.Thelandmammals
