单项选择题 PHLEGMATIC : PERTURB::（）

单项选择题 Maureen radiates an unfailing common sense and good humor, although not a false cheery（）; she has no illusions about life, and her grace comes from her capability to meet it（）.

单项选择题 Enlightenment thinkers（）faith in the abilities of mankind to uncover and solve pressing problems of the time, and thus they believe that human beings are creatures, capable of employing reason and logic.