英语填空题 一题,3Q
The story was abtou the beginning of life of -----(人类）.
这里的人类一共可以写哪些单词?
Professor Holloway,an eye -----（专家) ,organized a national survey of eye diseases in children.
这专家,可以写 expert.specialist .还是只能后者?
campaign .sport .区别也说下。