Bats fly, rather than glide, and thus are the only mammals capable of true flight.
A、straightC
暂无解析
AlthoughtheCarbon14methodofdatingoldobjectsisnotfoolproof,itisthebestmethodavailableatpresent
Urban renewal programs strive to upgrade areas that are becoming slums.
With the acquisition of smaller companies by larger ones, the 1960's saw a wave of new conglomerates.
ThecompanyissuesanannualreporteveryMarch.
The wheels of the first road vehicles were fashioned from crude stone disks.
