刷刷题APP(shuashuati.com)是专业的大学生刷题搜题拍题答疑工具,刷刷题提供Oil was formed from the ___ of plants and animals that lived on earth millions of years ago.A.wastesB.restsC.remainsD.ruins的答案解析,刷刷题为用户提供专业的考试题库练习。一分钟将考
However, they do not reach their adult size until they are 2 or 3 years old.The usual lifespan of bullfrogs is about 8 to 10 years. While in captivity, some of these bullfrogs have lived to be over 16 years old. Population The population of these frogs is not exactly known. However...
(幼崽)when they got to the United States.As the years passed,many hoped the pair would have cubs of their own.Ling-Ling gave birth several times.But none of the babies lived more than a few days.Each time a cub died,people all around the world felt sad.Both of the pandas lived to...