单选题 —Learning a language isn't easy. It takes time.
—I agree. ______ . There's no shortcut.
A. All roads lead to Rome B. Rome wasn't built in a day
C. Practice makes perfect D. Slow but sure wins the race

【正确答案】 B

【答案解析】[解析] All roads lead to Rome，“条条大路通罗马”。Rome wasn't built in a day“冰冻三尺非一日之寒”。Practice makes perfect，“熟能生巧”。根据句意应该选B。