2. 职称英语
  3. By the year 2010, scientists probably ______ a cure for cancer.A、will be discove

By the year 2010, scientists probably ______ a cure for cancer.A、will be discove

游客2024-09-29  17
问题 By the year 2010, scientists probably ______ a cure for cancer.
选项 A、will be discovering
B、are discovering
C、will have discovered
D、have discovered
答案 C
解析 动词时态。句中的2010年显示基本时态为将来时；同时by引导的时间短语为完成时的标志，可见此句应该使用将来完成时。
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