The word hands-on in paragraph 3 is closest in meaning to ______ A. primary B. complex C. unclear D. practicalĐoạn văn28/40The word hands-on in paragraph 3 is closest in meaning to ______primarycomplexunclearpracticalGiải thíchĐáp án đúng: D hands-on = practical (thực dụng, thực tiễn)