The animals there no longer had 29 with animals from other parts of the world.
答案：(C) contact
【句型】have contact with 字詞搭配「與……有接觸」；confusion（困惑）、marriage（婚姻）、transaction（交易）都不符合這個「接觸」的語境。
四個選項是四個不同的名詞，中文意思差很遠，你會直覺往語意去想「動物之間會有什麼」。這樣想沒錯，但比語意更快的是先看 have ___ with 這個框架——四個名詞裡只有一個塞得進去，不必等到把語意想清楚。
四個選項是四個不同的名詞，文法上都放得進去，可見這一格考的是語意與搭配。先看框架：have ___ with animals from other parts of the world，也就是 have ___ with somebody。contact 正是這個框架的常客——have contact with（與……有往來、接觸），同一組還有 make contact with（取得聯繫）、lose contact with（失去聯絡）、come into contact with（接觸到）。再用前後文驗算：前一句說澳洲被廣闊的海洋隔絕，下一句說 They evolved separately（牠們各自演化），夾在中間的這一句要說的正是「不再與外界的動物往來」，no longer had contact with 把前後兩句串成一條線。這一題的鑑別度 48，分開的是有沒有把這一句放進前後文裡看，而不是單獨挑一個字義。
marriage（婚姻）：語意先不論，形式上就過不了關——marriage 搭的介系詞是 to 不是 with（her marriage to John 她與約翰的婚姻、be married to sb 與某人結婚），這一招常常一眼就刷掉一個選項。confusion（困惑）：have confusion with 不是通行的說法，而且困惑是心裡的狀態，談不上與別的動物「有困惑」。transaction（交易）：指金錢或商業上的往來，用在動物身上不成立。
have contact with（與……有往來）、make contact with（取得聯繫）、lose contact with（失去聯絡）、come into contact with（接觸到）、keep in touch with（保持聯絡）、be married to（與……結婚）。
Up to about 250 million years ago the world had just one huge super-continent called Pangaea. Animals were able to move and intermix with 26. About 200 million years ago this super-continent broke up into two continents: Laurasia and Gondwana. About 60 million years ago Gondwana broke up into 27 later became South America, Africa, Antarctica, India and Australia.
Since then Australia 28 from the rest of the world by vast oceans. The animals there no longer had 29 with animals from other parts of the world. They evolved separately. As a result, about 95 of Australia's mammals and 94 of its frogs are found 30 else in the world. Australia has lots of very unusual animals.