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of video and sound devices ? shortly afterwards ? contributed to the development of TV ? was very primitive and had many drawbacks ? made important breakthroughs in the development of the TV ? in the late 1920s and early 1930s ? adopt many of the principles ? constructed the first colour TV ? regular colour TV broadcasts were delayed ? within a short time ? Satellites allow live TV programmes to be broadcast ? over vast distances ? make TV accessible to people who live far away from cities ? throughout the countryside and the remote areas ? a small percentage of people ? benefit from satellite TV ? broadcast the signals ? made the first recording of a human voice ? used round tubes to record on ? used discs as alternative to tubes ? be wound up by hand ? Times sure have changed! ? employed steel tape to record on ? paper tape also tore easily ? by the late 1960s ? Sound and video goes digital. ? The first CDs were made available. ? with the adaptation of digital technology ? make … things of the past ? keep pace with ? foresee what the future will bring [Explanation] 建議備課時可以巧妙設(shè)計一些問題,學(xué)生口頭回答問題時需要用到上述短語,能夠準(zhǔn)確回答也表明學(xué)生已經(jīng)了解這些短語的含義,然后教師再做書面呈現(xiàn)并簡要地講解,并要求學(xué)生課后復(fù)習(xí)并記憶。s child into your home and legally bee its parent The couple are unable to have children of their own, but hope to adopt a girl. 3. delay (v.) 1) to wait until a later time to do something He delayed his decision on whether to call an election. delay doing sth. Big panies often delay paying their bills. delay sth. until sth. The opening of this section of the road is delayed until September. 2) to make someone or something late seriously/badly/slightly etc