Is it only on the world market we can prove the competitiveness and quality of our goods?A

问题补充：

Is it only on the world market we can prove the competitiveness and quality of our goods?

A. where

B. which

C. that

D. how

答案：

A. where

B. which

(答案→)C. that

D. how

解析：考查强调句。句意：只是在世界的市场上我们才能证明我们产品的竞争力和质量吗？此句是强调句的疑问句形式。 Is/was+强调部分+that+其余部分？这里强调的是only on the world market 这个地点状语，选C。