填空题Choose TWO letters, A-E. Write the correct letters in boxes 23 and 24 on your answer
sheeL Which TWO of the following research methods are
mentioned in the passage? A. the use of existing data relating
to a geographical area B. measuring the space given to a
variety of activities C. watching what people do in different
parts of a building D. analysing decisions made during the
planning of a building E. observing patients' reactions to each
other