【单选题】Did you buy ______? [ ]
【单选题】—______ you ______ anything in that store? —No, I ______, but Jim ______. [ ]
A.
Did; bought; didn't; bought
B.
Did; buy; didn't; bought
C.
Did; bought; didn't; buy
【单选题】— _____ you buy _____ in the store? — Yes, I did. [ ]
【单选题】在薄板的小挠度弯曲问题中,其物理方程的个数为( )
【单选题】--Did you do _____ interesting yesterday? --Yes, ______.
【单选题】---Did you buy special? ---No ,I bought .
【简答题】当垂向水量交换强度为 0 时,介绍其特定解及其水文地质含义。