SectionⅣUsingLanguageANIMALEXTINCTIONManyanimalshavedisappearedduringthelonghistoryoftheearth
Themostfamousoftheseanimalsaredinosaurs(恐龙).Theylivedontheearthtensofmillionsofyearsago,longbeforehumanscameintobeingandtheirfutureseemedsecure(安全的)atthattime
ThereweremanydifferentkindsofdinosaurandanumberofthemusedtoliveinChina
Theeggsoftwenty-fivespecieshavebeenfoundinXixiaCounty,Nanyang,HenanProvince
Notlongagoararenewspeciesofbird-likedinosaurwasdiscoveredinChaoyangCounty,LiaoningProvince
Whenscientistsinspected(检查)thebones,theyweresurprisedtofindthatthesedinosaurscouldnotonlyrunliketheothersbutalsoclimbtrees①
Theylearnedthisfromthewaytheboneswerejoinedtogether②
动物灭绝从地球有史以来的这段漫长时期,许多动物都消失了
这些动物中最有名的是恐龙
千百万年前,恐龙就在地球上生活,比人类的出现要早得多,当时它们的前景好像也很安全
当时有许多不同种类的恐龙,其中有很多种类曾经生活在中国
25个种类的恐龙蛋是在河南省南阳西峡县发现的