[問題]PP Test 1 # Structure 135

[jrru27]

請問這題為什麼錯在答案B, 如何改? 3Q !!!

135. The 1880's saw not only the creation of the curtain wall and wind-braced iron frame also the architectural mastery of these structural devices.

[agape0417]

慣用語：not only .....but (also)-----------對等相關連接詞
這邊少一個but.....but不可以省略...