【单选题】Psychologists study memory and learning with both animal and human subjects. The two experiments reviewed here show how short-term memory has been studied. Hunter studied short-term memory in rats. He...
【简答题】、用 since 和 for 填空 1.______two years 2.____two years ago 3.___last month 4.______ 1999 5._______yesterday 6._______ 4 o’clock 7 4 hours 8._____an hour ...
【简答题】( ) 1 _____ here and ask him about it yesterday? A. Did you come B. Would you not go You didn't come D. Aren't you go ( ) 2 ___ he ___ a good time last Sunday? A. Were; were ...