问题
选择题
(2014·宝鸡三检)By the time the girl comes back to life,scientists probably________a cure for this incurable disease.
A.will have discovered
B.are discovering
C.will be discovering
D.have discovered
答案
答案:A
考查动词的时态。句意为:到这个女孩苏醒过来时,科学家们可能已经找到了治疗这种不治之症的方法。根据句意可知,此处应用将来完成时,故选A。
答案: A