高階ENGL-WRIARG-005
以下哪一句屬有效的讓步（concession）？
A. Phones are useful, so schools should allow them.
B. Admittedly phones can be distracting, but a ban is hard to enforce.✓ 答案
C. Phones are bad and should be banned.
D. Everyone knows phones are useful.
解說
讓步是「先承認對方論點有部分成立，再提出自己的立場」，用 admittedly、although、while、it is true that 這一類結構。B 先承認分心問題，再提出執行困難，顯示思考立體。A 只是因果，C 是單邊斷言，D 是訴諸普遍。