John plays the piano _____, if not better than, David. But he never shows off in public. A. as well B. as well as C. so well D. so well as
答案:B 解析: B这是一个比较状语从句,引导比较状语从句的连词和词组有:as…as,than, not so…as, the more…, the more…等。这是个肯定句,所以不能用D,因为有比较的对象也就是有宾语,所以不能省略第二个as