Question

7. The first edition in 1955 and a best seller ever since.

   A. was published;had been

   B. was published;has been

   C. has been published;has been

   D. had been published;had

Answer 1

7. B

7. B 解析：第一空后出现时间状语in 1955.故用动词的一般过去式；由时间状 语ever since可知后半句应用现在完成 时。句意：第一版本是在1955年出版 的，从那之后，它就成了畅销产品。