（10上海）
28. Every few years, the coal workers their lungs X-rayed to ensure their health.
A. are having B. have C. have had D. had had
28. Every few years, the coal workers their lungs X-rayed to ensure their health.
A. are having B. have C. have had D. had had
升11f15a59东件科有学优4ebe技a67b司限点径软广途公秀4f65网慧元-
答案：B
考点：本题考查时态。解析：根据时间状语every few years,可判断本句应为一般现在时，因此答案选B。
31. The church tower which will be open to tourists soon. The work is almost finished.
A. has restored B. has been restored C. is restoring D. is being restored
答案：D
考点：本题考查被动语态。
解析：Restore意思为修复，而最后一句表明工程还未完成，因此为正在修复中，答案选D.
东学司广技a67b8225慧9380软元习有量根-49e2升11f15a59c713网限点径公秀4f6546fe优4ebeb3afd575根科费件是0ef538f1途