21. One critic asserts that modern urban architecture causes sensory deprivation because it fails to provide visual and tactile ______ .
A. latency
B. stimulation
C. complacence
D. confusion
E. extension
22.
Because little rain falls in the district during summer, municipalities are necessarily ______ to ______ water from winter storms.
A. ready, squander
B. reluctant, retain
C. free, absorb
D. careful, store
E. unwilling, conserve