【题目】If we are not ________ the progress we have made, we will have greater success.
A.interested in
B.strict in
C.popular with
D.content with

【答案】D
【解析】考查短语辨析。be interested in对……感兴趣；be strict in对……严格；be popular with在……当中受欢迎；be content with对……满足。句意：如果我们不满足于现已取得的进步, 我们将会获得更大的成功。所以答案是：D