（2016•浙江）Silk ______ one of the primary goods traded along the Silk Road by about 100 BC.

题型：单选题题类：真题难易度：普通

2016年高考英语真题试卷（浙江卷）

Silk ______ one of the primary goods traded along the Silk Road by about 100 BC.

A、had become B、was becoming C、has become D、is becoming

举一反三

—Not really. She ___us clear directions and we were able to find it easily?

—I wouldn't have, either, if someone ______ you by the name.

参加会议的人非常感激为他们提供的信息。

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