按字母搜索

问题和答案

14701. Oceanic trench
       (Oceanic trench)
14702. Ocelot
       (Ocelot)
14703. Octal
       (Octal)
14704. Octave
       (Octave)
14705. Octocorallia
       (Octocorallia)
14706. Octopus
       (Octopus)
14707. Odawa
       (Odawa)
14708. Odenwald
       (Odenwald)
14709. Oder River
       (Oder River)
14710. Odessa
       (Odessa)
14711. Odilon Redon
       (Odilon Redon)
14712. Odin
       (Odin)
14713. Odontoceti
       (Odontoceti)
14714. Odontochelys
       (Odontochelys)
14715. Odyssey
       (Odyssey)
14716. OECD
       (OECD)
14717. Oestradiol
       (Oestradiol)
14718. Of Mice and Men
       (Of Mice and Men)
14719. Ofanto
       (Ofanto)
14720. Off-site data protection
       (Off-site data protection)
14721. Offa's Dyke
       (Offa's Dyke)
14722. Official residence
       (Official residence)
14723. Official U.S. PlayStation Magazine
       (Official U.S. PlayStation Magazine)
14724. Offside rule
       (Offside rule)
14725. Ofra Haza
       (Ofra Haza)
14726. Oganesson
       (Oganesson)
14727. Ogdoad (Egyptian)
       (Ogdoad (Egyptian))
14728. OGPU
       (OGPU)
14729. Ogyū Sorai
       (Ogyū Sorai)
14730. Oh Se-hun
       (Oh Se-hun)
14731. Ohio Senate
       (Ohio Senate)
14732. Ohio Valley Conference
       (Ohio Valley Conference)
14733. Ohm's law
       (Ohm's law)
14734. Oil
       (Oil)
14735. Oil sands
       (Oil sands)
14736. Ojibwe
       (Ojibwe)
14737. Okefenokee Swamp
       (Okefenokee Swamp)
14738. Okinawa
       (Okinawa)
14739. Oklahoma
       (Oklahoma)
14740. Okroshka
       (Okroshka)
14741. Oksana Baiul
       (Oksana Baiul)
14742. Ólafur Ragnar Grímsson
       (Ólafur Ragnar Grímsson)
14743. Old Kingdom of Egypt
       (Old Kingdom of Egypt)
14744. Old Melbourne Gaol
       (Old Melbourne Gaol)
14745. Old North Church
       (Old North Church)
14746. Old Style and New Style dates
       (Old Style and New Style dates)
14747. Old Testament
       (Old Testament)
14748. Old-growth forest
       (Old-growth forest)
14749. Oldest dated rocks
       (Oldest dated rocks)
14750. Oldham
       (Oldham)
14751. Olduvai Gorge
       (Olduvai Gorge)
14752. Olea capensis
       (Olea capensis)
14753. Olfaction
       (Olfaction)
14754. Olfactory system
       (Olfactory system)
14755. Olive (color)
       (Olive (color))
14756. Oliver & Company
       (Oliver & Company)
14757. Oliver Cromwell
       (Oliver Cromwell)
14758. Oliver Goldsmith
       (Oliver Goldsmith)
14759. Oliver Heaviside
       (Oliver Heaviside)
14760. Oliver Smithies
       (Oliver Smithies)
14761. Olivia Colman
       (Olivia Colman)
14762. Olly Murs
       (Olly Murs)
14763. Olof Palme
       (Olof Palme)
14764. Olympic Games
       (Olympic Games)
14765. Om Puri
       (Om Puri)
14766. Omagh
       (Omagh)
14767. Omega Centauri
       (Omega Centauri)
14768. Omnivore
       (Omnivore)
14769. On the Floor
       (On the Floor)
14770. Once Upon a Time in Mexico
       (Once Upon a Time in Mexico)
14771. Oncogene
       (Oncogene)
14772. One Direction
       (One Direction)
14773. One Hot Minute
       (One Hot Minute)
14774. One-inch boy
       (One-inch boy)
14775. One-party state
       (One-party state)
14776. Oneworld
       (Oneworld)
14777. Online Computer Library Center
       (Online Computer Library Center)
14778. Online shopping
       (Online shopping)
14779. Oobi
       (Oobi)
14780. Oodgeroo Noonuccal
       (Oodgeroo Noonuccal)
14781. Oomycete
       (Oomycete)
14782. Oort cloud
       (Oort cloud)
14783. Op art
       (Op art)
14784. Opcode
       (Opcode)
14785. OPEC
       (OPEC)
14786. Opel
       (Opel)
14787. Open class
       (Open class)
14788. Open content
       (Open content)
14789. Open Season (movie)
       (Open Season (movie))
14790. Open Season 2
       (Open Season 2)
14791. Open Season 3
       (Open Season 3)
14792. Open star cluster
       (Open star cluster)
14793. Open University
       (Open University)
14794. Openair Frauenfeld
       (Openair Frauenfeld)
14795. OpenBSD
       (OpenBSD)
14796. OpenOffice
       (OpenOffice)
14797. OpenOffice Base
       (OpenOffice Base)
14798. OpenOffice Calc
       (OpenOffice Calc)
14799. OpenOffice Draw
       (OpenOffice Draw)
14800. OpenOffice Impress
       (OpenOffice Impress)
14801. OpenVMS
       (OpenVMS)
14802. OpenVPN
       (OpenVPN)
14803. Opera buffa
       (Opera buffa)
14804. Opera house
       (Opera house)
14805. Opera seria
       (Opera seria)
14806. Opéra-Comique
       (Opéra-Comique)
14807. Operant conditioning
       (Operant conditioning)
14808. Operating system
       (Operating system)
14809. Operation Barbarossa
       (Operation Barbarossa)
14810. Operation Entebbe
       (Operation Entebbe)
14811. Operation Overlord
       (Operation Overlord)
14812. Operation Restore Hope
       (Operation Restore Hope)
14813. Operations and Checkout Building
       (Operations and Checkout Building)
14814. Operetta
       (Operetta)
14815. Opeth
       (Opeth)
14816. Ophthalmosauridae
       (Ophthalmosauridae)
14817. Ophthalmosaurus
       (Ophthalmosaurus)
14818. Opiliones
       (Opiliones)
14819. Opioid
       (Opioid)
14820. Opium poppy
       (Opium poppy)
14821. Oppidum
       (Oppidum)
14822. Opsin
       (Opsin)
14823. Optical fiber
       (Optical fiber)
14824. Optical illusion
       (Optical illusion)
14825. Optical printer
       (Optical printer)
14826. Opus Dei
       (Opus Dei)
14827. Opus number
       (Opus number)
14828. Oracle Corporation
       (Oracle Corporation)
14829. Oradea
       (Oradea)
14830. Oral rehydration therapy
       (Oral rehydration therapy)
14831. Orange (fruit)
       (Orange (fruit))
14832. Orange County, California
       (Orange County, California)
14833. Orange Is the New Black
       (Orange Is the New Black)
14834. Orange Walk District
       (Orange Walk District)
14835. Orator
       (Orator)
14836. Oratorio
       (Oratorio)
14837. Orbit
       (Orbit)
14838. Orbital resonance
       (Orbital resonance)
14839. Orchestration
       (Orchestration)
14840. Orchid
       (Orchid)
14841. Order of magnitude
       (Order of magnitude)
14842. Order of Merit
       (Order of Merit)
14843. Order of operations
       (Order of operations)
14844. Order of St Michael and St George
       (Order of St Michael and St George)
14845. Order of the Companions of Honour
       (Order of the Companions of Honour)
14846. Order of the Indian Empire
       (Order of the Indian Empire)
14847. Order of the Phoenix
       (Order of the Phoenix)
14848. Order of the Star of India
       (Order of the Star of India)
14849. Order of the Thistle
       (Order of the Thistle)
14850. Ordnance Survey National Grid
       (Ordnance Survey National Grid)
14851. Ordo Templi Orientis
       (Ordo Templi Orientis)
14852. Ordovician
       (Ordovician)
14853. Ore Mountains
       (Ore Mountains)
14854. Oregon Territory
       (Oregon Territory)
14855. Oregon Trail
       (Oregon Trail)
14856. Organelle
       (Organelle)
14857. Organic chemistry
       (Organic chemistry)
14858. Organic light-emitting diode
       (Organic light-emitting diode)
14859. Organic matter
       (Organic matter)
14860. Organisation internationale de la Francophonie
       (Organisation internationale de la Francophonie)
14861. Organism
       (Organism)
14862. Orgasm
       (Orgasm)
14863. Orhan Pamuk
       (Orhan Pamuk)
14864. Oriana Fallaci
       (Oriana Fallaci)
14865. Origami
       (Origami)
14866. Origen
       (Origen)
14867. Origin of birds
       (Origin of birds)
14868. Origin of life
       (Origin of life)
14869. Origins of the blues
       (Origins of the blues)
14870. Orinoco
       (Orinoco)
14871. Oriole
       (Oriole)
14872. Orion (constellation)
       (Orion (constellation))
14873. Orion Arm
       (Orion Arm)
14874. Orion complex
       (Orion complex)
14875. Orkney Islands
       (Orkney Islands)
14876. Orlando Bloom
       (Orlando Bloom)
14877. Orlando Brown
       (Orlando Brown)
14878. Ornamentation (music)
       (Ornamentation (music))
14879. Orne
       (Orne)
14880. Ornithischia
       (Ornithischia)
14881. Ornithomimidae
       (Ornithomimidae)
14882. Ornithomimus
       (Ornithomimus)
14883. Ornithopod
       (Ornithopod)
14884. Orogeny
       (Orogeny)
14885. Orquesta Sinfónica Simón Bolívar
       (Orquesta Sinfónica Simón Bolívar)
14886. Orrin Hatch
       (Orrin Hatch)
14887. Orson Scott Card
       (Orson Scott Card)
14888. Orthodox
       (Orthodox)
14889. Orthographic depth
       (Orthographic depth)
14890. Orthomyxoviridae
       (Orthomyxoviridae)
14891. Orthosie (moon)
       (Orthosie (moon))
14892. Orto botanico di Pisa
       (Orto botanico di Pisa)
14893. OS X El Capitan
       (OS X El Capitan)
14894. Osage County, Kansas
       (Osage County, Kansas)
14895. Osage Nation
       (Osage Nation)
14896. Osaka Castle
       (Osaka Castle)
14897. Osama bin Laden
       (Osama bin Laden)
14898. Oscar Hertwig
       (Oscar Hertwig)
14899. Oscar Pistorius
       (Oscar Pistorius)
14900. Oscar Stanton De Priest
       (Oscar Stanton De Priest)
14901. Osip Mandelstam
       (Osip Mandelstam)
14902. Osiris
       (Osiris)
14903. Oskar Heinroth
       (Oskar Heinroth)
14904. Oskar Kokoschka
       (Oskar Kokoschka)
14905. Osmoregulation
       (Osmoregulation)
14906. Osmosis
       (Osmosis)
14907. Osnabrück (district)
       (Osnabrück (district))
14908. Osteogenesis Imperfecta
       (Osteogenesis Imperfecta)
14909. Ostinato
       (Ostinato)
14910. Ostracod
       (Ostracod)
14911. Oswald Avery
       (Oswald Avery)
14912. Oswald the Lucky Rabbit
       (Oswald the Lucky Rabbit)
14913. Oswiu of Northumbria
       (Oswiu of Northumbria)
14914. Ot en Sien
       (Ot en Sien)
14915. Ottawa
       (Ottawa)
14916. Otter
       (Otter)
14917. Ottoman architecture
       (Ottoman architecture)
14918. Ottoman Empire
       (Ottoman Empire)
14919. Ottonian dynasty
       (Ottonian dynasty)
14920. Ouija board
       (Ouija board)
14921. Oulu
       (Oulu)
14922. Our (river)
       (Our (river))
14923. Ouro Preto
       (Ouro Preto)
14924. Ouroboros
       (Ouroboros)
14925. Out of Africa
       (Out of Africa)
14926. Outer Hebrides
       (Outer Hebrides)
14927. Outrigger skis
       (Outrigger skis)
14928. Outstation
       (Outstation)
14929. Over-harvesting
       (Over-harvesting)
14930. Overcharge
       (Overcharge)
14931. Overclocking
       (Overclocking)
14932. Overexposed (album)
       (Overexposed (album))
14933. Overhead projector
       (Overhead projector)
14934. Overijssel
       (Overijssel)
14935. Overland Expedition
       (Overland Expedition)
14936. Overpopulation
       (Overpopulation)
14937. Overseas departments of France
       (Overseas departments of France)
14938. Overseas France
       (Overseas France)
14939. Overture
       (Overture)
14940. Overweight
       (Overweight)
14941. Oviraptor
       (Oviraptor)
14942. Oviraptorosaur
       (Oviraptorosaur)
14943. Owen Morris
       (Owen Morris)
14944. Owsley Stanley
       (Owsley Stanley)
14945. Ox Mountain
       (Ox Mountain)
14946. Öxabäcks IF
       (Öxabäcks IF)
14947. Oxalaia
       (Oxalaia)
14948. Oxford English Dictionary
       (Oxford English Dictionary)
14949. Oxford Movement
       (Oxford Movement)
14950. Oxfordshire
       (Oxfordshire)
14951. Oxfordshire Ironstone Railway
       (Oxfordshire Ironstone Railway)
14952. Oxidizing agent
       (Oxidizing agent)
14953. Oxpecker
       (Oxpecker)
14954. Oxygen
       (Oxygen)
14955. Oxymoron
       (Oxymoron)
14956. Oxytocin
       (Oxytocin)
14957. Oy-Mittelberg
       (Oy-Mittelberg)
14958. Oyster
       (Oyster)
14959. Oyster card
       (Oyster card)
14960. Ozai
       (Ozai)
14961. Ozama River
       (Ozama River)
14962. Ozzie Newsome
       (Ozzie Newsome)
14963. P versus NP
       (P versus NP)
14964. P-type semiconductor
       (P-type semiconductor)
14965. P. J. Kennedy
       (P. J. Kennedy)
14966. Paaliaq (moon)
       (Paaliaq (moon))
14967. Pablo Casals
       (Pablo Casals)
14968. Pablo Escobar
       (Pablo Escobar)
14969. Pablo Picasso
       (Pablo Picasso)
14970. Pachacuti
       (Pachacuti)
14971. Pachycephalosauria
       (Pachycephalosauria)
14972. Pacific Division (NHL)
       (Pacific Division (NHL))
14973. Pacific Northwest
       (Pacific Northwest)
14974. Pacific Ring of Fire
       (Pacific Ring of Fire)
14975. Pacific Time Zone
       (Pacific Time Zone)
14976. Pact of Steel
       (Pact of Steel)
14977. Paddington station
       (Paddington station)
14978. Padma Bhushan
       (Padma Bhushan)
14979. Padma River
       (Padma River)
14980. Padma Shri
       (Padma Shri)
14981. Padua
       (Padua)
14982. Paganism
       (Paganism)
14983. Page Three
       (Page Three)
14984. Pahumara
       (Pahumara)
14985. Paignton Zoo
       (Paignton Zoo)
14986. Päijänne
       (Päijänne)
14987. Paint
       (Paint)
14988. Paintball
       (Paintball)
14989. Painting
       (Painting)
14990. Pair production
       (Pair production)
14991. Pakistan
       (Pakistan)
14992. Pakistan Movement
       (Pakistan Movement)
14993. Pakistan national cricket team
       (Pakistan national cricket team)
14994. Pakistan Peoples Party
       (Pakistan Peoples Party)
14995. Pakistani military
       (Pakistani military)
14996. Palace of Ardashir
       (Palace of Ardashir)
14997. Palace of Caserta
       (Palace of Caserta)
14998. Palacio de la Magdalena
       (Palacio de la Magdalena)
14999. Paladin
       (Paladin)
15000. Palaeocene
       (Palaeocene)