Bats fly, rather than glide, and thus are the only mammals capable of true flight.
A、straightC
暂无解析
Somecosmeticsmanufacturersattempttocapturetherose'sunmistakablefragrance香味insoapsandperfumes.
Insectpestsareamongtheleadingcausesofcropfailure.
AlthoughtheCarbon14methodofdatingoldobjectsisnotfoolproof,itisthebestmethodavailableatpresent
TheSalkvaccineisamajorfactorinthefighttoeradicatepolio.
Someseaurchins海胆havevenomous(toxin)spines
