Visitors can go rafting down the Rogue River 32 . swimming in the Applegate River.
答案：(D) or
這裡列舉兩個可以選擇的活動（泛舟「或」游泳），or 表示選擇並列；also（此外，是累加不是選擇）、but（但是）、for（因為）都不符合「兩者擇一」的並列邏輯。
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四個選項裡只有 also 帶著「還有」的味道，而這一段確實在介紹好幾種活動，很容易就挑了它。但這一句要說的是兩者「擇一」，不是兩者都做。
先看空格兩邊：Visitors can go rafting down the Rogue River ___ swimming in the Applegate River.（遊客可以到 Rogue 河泛舟……到 Applegate 河游泳。）兩邊都是 go ＋ V-ing 的活動，一個是泛舟、一個是游泳，遊客不必兩個都做，是提供選擇，所以用 or。順便把這一篇裡的 go ＋ V-ing 一次收齊，它們全都出現在同一段：go rafting（去泛舟）、go swimming（去游泳）、go fishing（去釣魚）、go hunting（去打獵、去採集）。這個句型專門用來講從事某種休閒活動，是很好用的一組。
also（也）：它是副詞，不是連接詞，不能拿來連接兩個並列的成分。but（但是）：轉折，但泛舟與游泳並不互相牴觸。for（因為）：表原因，而且它引出的是前面那句話的理由，位置也不對。
go rafting（去泛舟）、go swimming（去游泳）、go fishing（去釣魚）、go hunting for（去尋找、採集）、a popular activity（受歡迎的活動）、along the roadsides（沿路邊）。
Although Grants Pass, Oregon, is a fairly small town, it offers much to amuse summer visitors. Water sports are 31 the most popular tourist attraction. Visitors can go rafting down the Rogue River 32 . swimming in the Applegate River. Fishing in the area is another popular activity. Lots of people also go hunting for wild berries that grow along the roadsides. 33 , there are lovely, clean campgrounds where campers can park their vehicles.
34 those who prefer to stay in town, Grants Pass offers several nice hotels. In town, tourists can browse through 35 number of interesting shops, such as antique stores and the shop that sells items 36 from Oregon's beautiful myrtlewood. Another fun 37 is shopping at the open market where local folks sell produce grown in their gardens. And 38 , Grants Pass has a lot of places to eat, ranging from a low-calorie dessert place to lovely restaurants, some of which offer good food and gorgeous views.
39 you can see, Grants Pass offers a lot to do in the summer. 40 you want to give your family a nice, wholesome vacation, try visiting this charming town.