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How time flies! We should show love for our parents and make them how much they mean to us.
Bach died in 1750, but it was not until the early 19th century____ his musical gift was fully recognized.
①加强雨林管理和保护,建立自然保护区
②设立国际基金,使当地从管理和保护中获益
③加强雨林缓冲区建设,减少移民和农耕进入雨林区的机会
④利用生物措施和工程措施构筑防护林体系