Throughout most of their lives, human beings perpetually learn and increase their mental capacities().

单项选择题We have to ask them to quit talking in order that all people present could hear us clearly().

A. decrease
B. cease
C. continue
D. keep

单项选择题The research team needs to confer with the director before it begins its final report.()

A.argue
B. debate
C. compute
D. consult