As new materials develop, one invention often 25 another.
答案：(A) leads to
lead to another（導致另一項發明）表示一項發明常帶動另一項發明的誕生；finds out／succeeds in／agrees with 均不符合此處因果語意。
四個選項都是動詞加介系詞的組合，形態一樣，你會憑中文挑一個。
鑑別度高達 64。先看空格前後：主詞是 one invention（一項發明），空格後面是 another（另一項發明）。整句 As new materials develop, one invention often ______ another 在說材料一發展，發明就一個帶出一個。所以要的是「導致、帶來」——lead to，後面接的正是被帶出來的結果。填進去讀成 one invention often leads to another（一項發明往往帶出另一項）。接下來那一段正是在示範這條鏈：鋼被發明出來、鋼構建築出現、樓層變多、於是需要電梯，可以拿來驗算。指考 97 年第 22 題考的 result in 與這裡的 lead to 是同一組，後面接的都是結果；而 result from 後面接的是原因，方向相反，三個一起記最省事。
finds out（查明、發現）後面接的是被查明的事實；succeeds in（成功做到）後面要接 V-ing；agrees with（同意；合乎）的主詞通常是人。
lead to（導致、帶來）、result in（導致）、result from（起因於）、find out（查明、發現）、succeed in ＋ V-ing（成功做到）、agree with（同意；合乎）。
Science makes possible the use of new materials and new methods of producing objects. For example, some 20th-century chairs are made of steel and plastic. These materials, 24, were undreamed of in the 18th century. As new materials develop, one invention often 25 another.
Steel, for instance, was developed by engineers in the 19th century. 26 its strength, steel soon became a useful building material. 27 steel construction, buildings could then have a great many stories. But no one could be expected to walk up 8, 10, or 30 flights of 28.
Therefore, to make tall buildings more accessible to their users, the elevator 29. By providing much-needed space in a world 30 people, tall buildings have solved a great problem of the city and have completely changed our way of life.