The number codes 3152, 3455 and 5213 stand for three of the words MISS, SHAM, MASH and HAMS. Work out the code for each of the four words: MISS, SHAM, MASH and HAMS.
【简答题】In response to the ____1_____ of the mid to late 1970's, and the absence of answers in Keynes theory, ____2____ began to gain popularity in the mid-1970s.